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The distance through the earth from North to South is seven thousand nine hundred miles.

The distance round the earth is twenty-four thousand nine hundred miles.

How far is the moon from the earth?

It is two hundred and forty thousand miles from the earth.

How far is the sun from the the earth?

The distance of the sun from the earth is ninety-three million miles.

What is that in your hand?

It is a ball.

The ball is small.

What is that in the sky?

It is the sun.

The sun is great.

The sun is a great ball of fire.

What is the size of the sun?

It is 864,000 miles through from one side to the other.

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What is the size of the moon?

It is two thousand one hundred and sixty miles through from one side to the other.

Is the moon smaller than the earth?

Is the earth smaller than the sun?

Is the sun greater than the moon?

The moon is near the earth.

The earth is far from the sun.

New York is near Washington.

San Francisco is far from Washington.

Are the star smaller than the sun?

No,some of the stars are much greater than the sun.

Are they nearer than the sun?

No,they are much farther than the sun.

How far from the earth is the nearest star?

It is over four light-years from the earth.

What is a light-year?

It is the distance which light goes in a year.

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This is a flame.

It sends out light.

The sun sends out light.

The light goes out from the sun in every direction.

Light goes 186,300 miles in a second.

How far does it go in a year?

It goes about 6,000,000,000,000 miles in a year.

A light-year is 6,000,000,000,000 miles.

The nearest star is over four light-years from the earth.

The nearest star is 25,000,000,000,000 miles from the earth.

The nearest stars are very far from us.

Some of the stars are very much farther.

The farthest stars are thousands of light-years from us.

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The sun sends its light out in every direction.

These are four directions.

Up and down are two other directions.

This boy has six apples in his hands.

He is on a branch of a tree.

He will send the six apples in different directions.

He sent one apple north, another apple south,another east ,and another west.

He sent another apple down.

He sent five apples in five directions.

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He sent the last apple up.

But then it came down.

Why did it come down?

The first apple went north and then it came down.

The other apples went south and east and west and then they all came down to the earth.

They all came down to the earth?

Why did they come down?

The first apple...

The last apple...

What is the first...?

what is the last...?

These men are in a line.

This is the first man.

This is the last man.

Here are three dogs.

Which is the first dog?

Which is the last dog?

The other dog is the dog in the middle.

He is between the first dog and the last dog.

Two of the dogs are white.

The other dog is black.

The dog in the middle is black.

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Here are two bodies.

One is a great body.

It is the earth.

The other is a small body.

It is an apple.

The apple is coming down to the earth.

Why?

It is coming down because there is an attraction between the two bodies.

The attraction between them makes the apple come down.

All bodies which have weight have an attraction for one another.

Here are two bodies.

These are springs.

Which body has the greater weight?

Here are two men.

This man is thin.

His body is thin.

This man is fat.

His body is fat.

Which man's weight is greater?