8th grade pretest (copy of the final) 2024

Front

What happens to kinetic energy as the speed of an object increases?

Back

The kinetic energy increases.

Front

How many protons are in a Lithium atom?

Back

3

Front

Are Group 1 elements reactive?

Back

Yes, they are very reactive.

Front

In which direction does heat transfer?

Back

Heat transfers from an area of high temperature to an area of low temperature.

Front

What type of forces are acting on a box when there is a push and a pull?

Back

The forces are unbalanced.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What are the characteristics of metals in Group 1 of the periodic table?

Back

They are highly reactive and have low melting points.

Front

What is the principle of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed from one form to another.

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces do not change an object's motion, while unbalanced forces do.