HSA Physical Science

Question 1

Which of the following is an example of a physical change?

Accepted Answer

Cutting paper

Answer

Cutting paper only changes the shape and size of the material without producing a new substance, making it a physical change.

Question 2

A student pushes a box across the floor. The force that opposes this motion is called:

Accepted Answer

Friction

Answer

Friction is the force that opposes the motion of objects sliding against each other, resisting the push on the box.

Question 3

Which state of matter has a definite volume but no definite shape?

Accepted Answer

Liquid

Answer

Liquids have a definite volume but take the shape of whatever container they are placed in, giving them no definite shape.

Question 4

An object has a mass of 50 grams and a volume of 10 cm³. What is its density?

Accepted Answer

5 g/cm³

Answer

Density equals mass divided by volume: 50 g ÷ 10 cm³ = 5 g/cm³.

Question 5

Which of the following is the best conductor of electricity?

Accepted Answer

Copper

Answer

Copper is a metal with free-moving electrons that allow electrical current to flow easily through it, making it an excellent conductor.

HSA - Hawaii State Assessment Practice Test