8th Science TN Ready Review

Front

What happens to the acceleration of an object if you double its mass while applying the same force?

Back

The acceleration will cut in half.

Front

What effect does the south pole of one magnet have on the south pole of another magnet?

Back

Repulsive.

Front

What happens to the acceleration of an object if you double the amount of force exerted on it?

Back

It will increase.

Front

What is the transition from igneous rock to sedimentary rock called?

Back

Igneous --> Sedimentary.

Front

Which fossil layer contains organisms most similar to present-day organisms?

Back

Layer 1.

Front

What is Newton's Second Law of Motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Front

What is the formula for calculating force?

Back

Force = Mass x Acceleration (F = ma).

Front

What type of rock is formed from the cooling and solidification of magma or lava?

Back

Igneous rock.

Front

What is the process called when sediment is compacted and cemented to form sedimentary rock?

Back

Lithification.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance, while a chemical change alters its chemical composition.