Do Bats Hibernate In The Winter?

In those parts of the world where some months of the year are very cold, mice and other small mammals hibernate. This means that they go into an inactive, sleep-like state for the cold period and only fully wake up when the weather turns warm again.
Hibernating animals breathe much more slowly and their body temperature falls. 
They also need much less food. 
They build up a thick layer of fat during the warmer months and use it up very slowly during hibernation.
A dormouse can sleep in its nest for up to nine months in a year. It may wake up at intervals during this time to nibble at its store of nuts and berries.

Do Bats Hibernate In The Winter?

Not all bats hibernate, but only those living in places where during the winter months the insect prey becomes scarce, so the bats can’t support an active metabolism.
During hibernation, bats wake up every couple weeks, when they may move around and even fly short distances. 

Dinosaur Games for Children - My Moving Dino DIY Project

1.You need:

2.Find out more about a dinosaurs.

  • Research
  • Magazines
  • Books
  • Internet
  • Museums


3.Draw its body, tail, legs, neck, and head on a sheet of card.

4.Colour and cut out the parts.

5.On the back of each part write a sentence about your dinosaur.

6.Put your dinosaur together.

7.Tell your class about your dinosaur.


DIY Game for Kids - 3D Shoe Box Computer Game

1.You need:

2.Make a hole in one end of the box. Cut two slits in each side.

3.Draw round the end of the box. Cut out the square. Colour a computer game scene on the paper.

4 Glue the scene to the back of the box.

5.Draw your game characters on the end of the strips of card. Cut the card out around the drawings.

6.Put your characters in the slits. Look through the hole in the end of the box.

7.Explain your game to your class.

Soil testing for kids - What is soil made of

Home Soil Test:

You will need:
  • a handful of garden soil or forest floor soil
  • water
  • a small stick
  • a small glass jar
1. Half fill a glass jar with water and then put in a handful of soil.

2. Use the stick to stir the soil into the water. Then leave it to settle.

3. Watch as the soil settles in different layers. What falls to the bottom of the jar first? What settles above that? And what settles as the top layer?

Even if you wait a long time, the water will never become completely clear because some of the smallest pieces of clay will remain floating in it. Bits of plants and leaves will stay floating on the surface.

Try this experiment with soil from different places. Are the different layers in the jar always the same thickness?

Soil composition - What is soil? 

Almost all the land on our planet is covered by a layer of soil.
Do you know what's in the soil?
Soil is a mixture of living and non-living material.
It includes the rotting remains of plants and animals, tiny living things, air, water and small bits of rock.
Look at a sample of soil through a magnifying glass or under a microscope, and you'll often see that it's full of living things.
Some of these living things are small invertebrate animals, such as worms and insects.
Others are bacteria and molds—but you won't see them.
These living things help to create a part of the soil that's called humus.
Humus is the organic part of the soil, which means that it is made of material that was once alive. 
Most of the humus is made from the leaves, stems, and flowers of dead plants.
The bacteria, molds, and invertebrates in the soil feed on this dead and decaying plant material.
The waste material which these organisms leave behind is full of nutrients that provide food for living plants to grow.
Humus also holds air and water in the soil.
The rest of the soil is made up of particles of rocks.
The big particles are sand and the smallest ones are clay. Because rocks are not living things, we say that they are inorganic.
Soil is a mixture of organic and inorganic materials.

What are Parasites - Parasites Definition for Kids

Animals feed on other animals or plants or both.
But some small animals actually live on, or even in, the animals or plants from which they feed.
They eat small amounts of the living bodies of larger animals or plants, which also provide shelter for them. Animals that do this are called parasites. 
Some plants are parasites, too.
They grow on other plants and feed from them.
They don't make food for themselves as other plants do.
The animal or plant that parasites live on is called the host.

Animal parasites

Some animal parasites feed by sucking the blood of larger animals.
These blood-suckers include ticks, fleas, lice, and leeches. One of these parasites clings to the body of the host animal and bites into its skin. The parasite's body becomes swollen as it fills with blood. Fleas jump from one part of the host animal to another, sucking its blood.

Fleas live in clothes and on the bodies of humans, birds, and other animals. They suck the blood of a host animal.

Plant parasites

Many plants that are parasites, like dodder or rafflesia, don't have green leaves. And they don't have green stems like other plants. Other plants are green because they contain a green substance called chlorophyll. This absorbs the sunlight they need to make their food. Plants that grow and feed on other plants don't make their own food.

Fungi parasites

Some kinds of fungus are parasites. Fungi can grow on both plants and animals and can cause serious diseases. The fungi that grow on plants can sometimes spread very quickly and destroy important crops, such as wheat and potatoes.

The smallest parasites

Some bacteria are parasites that can cause disease.
They make animals ill when they invade their bodies. Even smaller than bacteria are parasites called viruses, which can also cause disease.
Unlike other organisms, viruses are not made up of cells.
They lack some of the substances needed to live on their own.
Viruses enter into the cells of other living things in order to obtain these substances and be able to live and reproduce.

Hurricane Information for Kids - What Causes a Hurricanes to Form?

A hurricane is a powerful, whirling storm that starts over tropical oceans. 

Hurricanes can also be called typhoons or cyclones.

How do Hurricanes Form?

In tropical regions, warm air rises quickly above the sea.
It contains large amounts of water vapor that has evaporated from the sea below.
Above the sea, the water vapor cools, turns back into water droplets and forms storm clouds.
Sometimes, the very moist air traveling upwards meets strong winds that pull it up even higher.
More moist air then rises from above the sea, making a huge, swirling ring of wind and rain.
Hurricane winds rotate at speeds of up to 150 miles (240 kilometers) an hour around a calm area in the center, called the eye of the storm.
The hurricane may last several days, moving forwards at about 12 miles (20 kilometers) an hour.
Most of the damage caused by hurricanes happens because the storm creates huge waves that flood the land.
This kind of storm needs a constant supply of moist air rising from warm seas.
So once they reach dry land, hurricanes die out.
If you could slice through a hurricane, this is how it would look.

It consists of a huge mass of wind and rain, swirling at enormous speed around a still point in the middle, called the eye.
A hurricane moves forward as it rotates, creating huge, destructive waves in its path.

What Causes a Tornado to Form - Tornado Information for Kids

What is a tornado?

The weather can sometimes be very dangerous.
Violent storms can create fierce, twisting winds that seriously damage anything that gets in their way.
A tornado is a powerful, twisting windstorm. 

What Causes a Tornado to Form?

Most tornadoes develop along a boundary, called a front, where cool, dry air meets warm, humid air.
Large thunderclouds appear, thunder begins to rumble, and a nearby cloud becomes dark and dense.
If the warm air rises very quickly, more warm air rushes in to replace it.
As this air rises, it sometimes starts to rotate.
The rotating air forms a tornado, or twister, which is shaped like a long, thin funnel stretching down from the cloud towards the ground.
If this funnel meets the ground, it sucks things up like an enormous vacuum cleaner, making a swirling mass of dust and dirt, destroying almost everything in its path.
Tornadoes sometimes make houses explode!
When the tornado sucks up air from around the outside of the house, it makes the air pressure outside lower than the air pressure inside.
The greater force of the air inside pushes the walls apart and the house explodes!

Lightning Information for Kids - What Causes Lightning?

Lightning is a giant spark of electricity in the sky. 

During a storm, strong winds blow the tiny particles of dust and water around inside the cloud and make them collide with one another.

Normally, each particle in the cloud has what scientists call a positive and a negative electrical charge.
But when the particles collide with each other, these charges separate.
Most of the positively charged particles move to the top of the clod and most of the negatively charged particles move to the bottom.

What Causes Lightning?

The spark happens when the negative charges in a thundercloud meet the positive charges in another cloud, or on the ground.
Lightning strikes somewhere on the earth about 100 times every second!

Bacteria for Kids - What is a Bacteria?

What is a Bacteria?

Bacteria are very small living things that have only one cell.
Some scientists classify bacteria as plants, because some kinds of bacteria can make their own food from sunlight, like green plants do.
But there are many differences between plants and bacteria.
So many scientists say that bacteria belong to a separate kingdom of living things, which is called the monera kingdom.
There are thousands of different kinds of bacteria. 
Each bacterium is so small that you need a powerful microscope to see it.

These rod-shaped bacteria are on the head of a pin. The photograph is enlarged so much that the surface of the pin looks rough, not smooth.

Many kinds of bacteria are useful. 
They help living things to survive and be healthy. 
Some of the bacteria on your skin protect you from other tiny living things that might harm you.
Those in your intestines help to break down the waste products that your body eliminates. They even help to make vitamins that keep you healthy.
We use bacteria to make some types of cheese and yogurt.
Bacteria in soil and water help to break down animal droppings and the dead bodies of animals and plants. These all contain chemical elements, such as carbon and nitrogen.
Some bacteria help change these chemical elements into other substances. These substances can then be used again by other living things.

But not all bacteria are helpful. Some kinds of bacteria destroy healthy cells and cause diseases. 
Whooping cough and food poisoning are caused by bacteria.
Animals and plants suffer illnesses, too.
Anthrax, a cattle disease, is caused by bacteria.
Bacteria also cause certain kinds of rot and blight in plants.

How do bacteria feed?

Bacteria are surrounded by a thick cell membrane with no openings to take in solid food.
Some bacteria contain chlorophyll, which can make food with the help of sunlight. Others soak up fluids from the body in which they live.
Bacteria that live on rotting plants or animals use chemical proteins called enzymes.
These can turn the dead matter into simpler liquids.
The bacteria then soak up the liquid through their cell membrane.
In this rod-shaped bacterium, the nuclear body forms an area of the cytoplasm.

Thunderstorms for Kids - What are Thunderstorms?

Despite their dramatic behavior, thunderstorms are the smallest of the different kinds of storms.
They average around 16 km (10 mi) across, but they often occur in lines that can be a few hundred miles long or clusters a couple hundred miles across.
Thunderstorms are often part of larger storms such as hurricanes.
While thunderstorms occur most commonly in warm weather, they can happen in the winter.
Sometimes snow will fall from a thunderstorm instead of rain; this is called a “thunder snow.”

Every thunderstorm includes lightning because lightning causes thunder.
Lightning creates a danger in any thunderstorm, no matter how large or small.
Many thunderstorms drench the countryside with heavy rain, so you also have to worry about flash floods—that is, floods that rise very quickly, sometimes running over the banks of normally small streams.
If a thunderstorm is strong enough, it can also create hail, or balls of ice that fall from the storm.
Hailstones are usually less than 1.3 cm (0.5 in) across.
Occasionally hailstones as big as softballs fall during storms, posing considerable danger because such large stones fall faster than 160 km/h (100 mph).
Some especially dangerous thunderstorms create winds called downbursts, which descend from the clouds and hit the ground going faster than 160 km/h (100 mph).
Downbursts are sometimes concentrated in small areas less than 4 km (2.5 mi) across called microbursts. Thunderstorms also sometimes create tornadoes in the warm air that’s rising from the ground.
Unlike microbursts, tornado winds spin in a circle as the air rises.
Tornado winds can blow faster than 400 km/h (250 mph), but twisters this strong are rare.

Facts on Water for Kids

Water is not only the most common substance on earth, it is also one of the most unusual.
No other substance can change its shape and form like water can.
Water is made up of tiny particles called molecules. 
A single drop of water contains millions of molecules. Each of these molecules is made up of even smaller particles. These are called atoms. Each water molecule contains atoms of two substances, hydrogen and oxygen.
Two atoms of hydrogen join with one atom of oxygen to form water. 
Scientists give hydrogen the symbol H and oxygen O. These symbols are used together to give the scientific name for water—H20.
Can you see why?
Water can exist in three states—a solid, a liquid or a gas. 
The molecules that make up liquid water are always moving freely. When water is cold, the molecules slow down. If cooled enough, water can change to ice. When rain water is frozen, it takes on other forms, such as snow, hail, or sleet.
When water is heated to a boiling state, it forms steam. The molecules move around in the air with great speed and a high level of energy.
Water will always flow to the lowest place it can reach. At the Iguagu Falls, on the border of Brazil and Argentina, the waterfalls more than 231 feet (70 meters).

When water freezes, the molecules slow down and form a regular pattern. Snowflakes such as these always have six sides, though each one is different from any other.

These icicles are solid water and very hard.
As water trickles down from the eave, it freezes into an icicle. Then as more water trickles down the icicles, it freezes and adds to the size of the icicles.

This snowman contains millions of tiny ice crystals, but most of it is air.

Millions of droplets of boiling water and steam from the Old Faithful geyser, in Yellowstone National Park, come from inside the earth's crust.

The tiny droplets of water in this dawn fog in the Namib Desert, in southwestern Africa, will gradually evaporate as the day becomes hotter.


What is the Recommended Daily Water Intake - Importance of Water in Our Life

What is the recommended daily water intake?

Without enough water, the human body is soon unable to go on working. 
Our blood is mostly made of water.
Blood carries oxygen from our lungs and nutrients from our intestines to all parts of our bodies. Nutrients are the useful chemicals that we take from our food.
Water also helps to keep our muscles and joints running smoothly.
Some of this water is lost because we breathe it out. In cold weather, we can see the water vapor condensing in the cold air as it comes out of our mouths.
We lose water when we perspire and when we go to the toilet.
If we are ill, we often have a fever and perspire more than usual. 
This is why, if we are ill, the doctor may tell us to drink plenty of liquids.
Did you know that you could live without water for only about a week? 
You probably think your body feels firm and solid because it's full of strong bone and muscle.
But, in fact, about 65 per cent of your body is made up of water.
Because we lose water, we need to keep replenishing the water in our bodies.
We need about 2.5 quarts (2.4 liters) of water each day.

Fun Facts About Water for Kids

Did you know that nearly three-quarters of the surface of the earth is covered with water? 
There are vast oceans like the Atlantic and the Pacific, and smaller seas like the South China Sea and the Red Sea.
There are lakes, rivers and streams.
Around the North and South poles, frozen water forms icecaps that last all the year round.
Below ground, there is even more water. 
This has soaked down through the soil to fill the spaces between the rocks with large stores of water.
There is even water in the air. 
Clouds are made up of millions of tiny droplets of water. Clear skies contain moisture which moves around in the air as an invisible gas.
Water is different from every other substance on earth because it can be found in its natural state in three different forms.

  • When we speak of water, we usually mean water as a liquid. 
  • When water is solid, we call it ice. 
  • When it is a gas, we call it water vapor.

Water can change very easily from one form to another.
Heat from the sun makes liquid water change to water vapor.
When the water vapor cools it forms rain, which falls to the earth.
If the rain becomes very cold it can change to snow or hail.
Every living thing on the earth depends on water.
Animals need water to drink.
They may eat other animals or plants, and these also need water to survive and grow.
Even plants and animals that live in desert regions, where rain rarely falls, need the tiny amounts of water vapor in the atmosphere to survive.

Bat hibernation - Do bats hibernate?

Do Bats Hibernate?

Not all bats hibernate, but only those living in places where during the winter months the insect prey becomes scarce, so the bats can’t support an active metabolism.
During hibernation, bats wake up every couple weeks, when they may move around and even fly short distances. 

What Is Hibernation?

In those parts of the world where some months of the year are very cold, mice and other small mammals hibernate. This means that they go into an inactive, sleep-like state for the cold period and only fully wake up when the weather turns warm again.
Hibernating animals breathe much more slowly and their body temperature falls. 
They also need much less food. 
They build up a thick layer of fat during the warmer months and use it up very slowly during hibernation.
A dormouse can sleep in its nest for up to nine months in a year. It may wake up at intervals during this time to nibble at its store of nuts and berries.

Pony Express History - What Was The Pony Express?

What Was The Pony Express?

If you receive a message and pass it on to someone else, you are acting as a relay. Relays are useful for sending messages over long distances.
In telecommunications, relays pick up a signal and make it stronger before passing it on.
Without relays, the signal would be too weak to understand by the time it reached the end of its journey.
One of the most famous relay systems was the Pony Express, which carried mail from St Joseph, Missouri, in the United States of America, over the mountains to Sacramento, California.
This was in 1860 and 1861, before there were railways or telegraph lines across North America.
Pony Express riders used fast horses or ponies. 
The horses were changed every 10-15 miles (16-24 kilometers).
Each rider traveled 74 miles (120 kilometers) or more in a working day. So a message got through much more quickly than it would have with a single messenger.
But by October 1861, the transcontinental telegraph was completed, and the Pony Express was no longer needed.
Riders of the Pony Express traveled in relays day and night in all kinds of weather. A package could travel the entire 1,962-mile (3,164-kilometer) trail in 10 days or less.
Frank E. Webner, pony express rider, ca. 1861
Creator(s): Department of Commerce. Bureau of Public Roads. (08/20/1949 - 04/01/1967)
Historical Photograph File of the Bureau of Public Roads, 1896 - 1963; Records of the Bureau of Public Roads, 1892 - 1972; Record Group 30; National Archives.

All Natural Detox Cleanse - How to cleanse your body?

Human body is like a wonderful machine, in which each part has a special job to do. But in order for each part to work properly and in harmony with all the other parts, we must take care of our body.
To stay healthy, you need to eat meals that contain a balanced choice of foods. You need to take some kind of exercise regularly. And you must also rest, to allow your body to regain energy. It is important that you wash and keep yourself clean, to reduce the chances of catching a disease or an infection.

Eating the right foods

Many people are lucky enough to be able to eat all the right foods they need to keep alive and healthy. While you are growing, you need plenty of protein. This is found in foods such as fish, meat, milk, eggs, beans, and nuts. You also need to eat fresh fruit and vegetables. You should eat regular meals and not go for long periods of time without eating.

Taking regular exercise

As well as eating the right foods, you must keep your muscles and joints healthy by doing lots of exercise. Regular exercise keeps your body strong and fit. It keeps the blood vessels healthy and makes the blood reach every part of your body. It helps you avoid putting on extra weight. The best exercise comes from cycling, running, walking, or swimming.

Keeping clean

Make sure you keep yourself and your surroundings clean. This will help prevent bacteria, viruses, protists, and larger invaders from spreading through the environment and infecting you and others. Daily washing keeps your body free from dirt and prevents skin infections. The areas of your house where you eat and wash should always be kept clean.

Preventing illness

You can also be protected against some illnesses by being vaccinated. You can have vaccinations which will make you immune to certain viruses, such as measles, tuberculosis, and polio. There are laws that require vaccinations. If schools don’t offer a program of vaccination, then parents see to their own children.
Make sure you clean your teeth every day. Don’t eat too many sugary foods, because they harm your teeth. It’s a good idea to visit a dentist and have your teeth checked regularly.

Sleeping

Everyone needs sleep. Although the norm is eight hours a day, some people may need more, and others may require less. Sleep helps your body to recuperate, particularly the brain and the nervous system. Without sleep, you have less energy and feel tired. After hard work or exercise, you need to rest and relax. Relaxation can be just as important as sleep in helping you keep healthy.