HSA Physical Science

Question 1

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

Accepted Answer

Cutting paper

Answer

Burning wood

Answer

Rusting iron

Answer

Baking a cake

Question 2

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

Accepted Answer

Friction

Answer

Gravity

Answer

Inertia

Answer

Tension

Question 3

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

Accepted Answer

Liquid

Answer

Solid

Answer

Gas

Answer

Plasma

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

500 g/cm³

Answer

0.2 g/cm³

Answer

60 g/cm³

Question 5

Which of the following is the best conductor of electricity?

Accepted Answer

Copper

Answer

Wood

Answer

Plastic

Answer

Rubber

Question 6

When a guitar string vibrates, it produces sound. This sound travels to your ears as:

Accepted Answer

Mechanical waves

Answer

Light waves

Answer

Electromagnetic waves

Answer

Radiation

Question 7

According to Newton's First Law of Motion, an object at rest will:

Accepted Answer

Stay at rest unless acted on by an unbalanced force

Answer

Begin moving on its own over time

Answer

Slow down due to gravity

Answer

Always accelerate downward