Science Test Questions #1

A block of wood has a mass of 120 grams and a volume of 200 centimeter square. What is the density of the wood?

0.6 grams.

Explain why a golf ball is heavier than a table-tennis ball, even though the balls are the same size.

A golf ball is denser and weighs more.

Is air matter? How can you tell?

Air has mass and takes up space.

What does volume measure?

All matter takes up space. The amount of space that an object takes up or occupies, is known as the object's volume.

Density describes the mass of a substance in a given volume. To find the density of a substance, what formula do you use?

D= M/V. M=Mass. V=Volume.

What is the amount of matter in an object?

Density.

How can you tell if something is matter?

If it takes up space.

What is anything that has mass and takes up space?

Matter.

Does observing a physical property of a substance change identify of the substance?

No. For example, you can see an apple's color or measure the volume without changing its identity.

Why do astronauts weigh less on the moon than they do on Earth?

There is less gravity on the moon.

Volume is the amount of space that matter in an object occupies. To find the volume, what formula do you use?

V=L times W times H. L=Length W=Width. H=Height.

What is the amount of space that matter in an object occupies?

Volume.

What is a measure of the gravitational force on an object?

Weight.

Is it possible for an object's weight to change while its mass remains constant?

Yes! An objects weight will change on the moon but mass will be the same.

Would a triple-beam balance give the same value for mass of used on the moon?

Yes-Both sides need to balance whether on Earth or the ground.