Earth and Space/Matter Review Questions

Front

What is the mass of an object?

Back

The mass of an object is the amount of matter it contains, usually measured in grams or kilograms.

Front

How long does it take the Earth to orbit around the Sun?

Back

It takes the Earth 365 days to complete one orbit around the Sun.

Front

What is rust?

Back

Rust is a reddish-brown substance that forms when iron reacts with oxygen and moisture in the air, indicating a chemical change.

Front

What type of change occurs when ice cream is made?

Back

Making ice cream involves both physical changes (mixing ingredients) and chemical changes (freezing).

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Front

In which direction does the Sun appear to move across the sky?

Back

The Sun appears to move from east to west across the sky.

Front

What are the three states of matter?

Back

The three states of matter are solid, liquid, and gas.

Front

What is an example of a mechanical change?

Back

An example of a mechanical change is breaking a glass into pieces.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.