Science 8 Quiz

Which of the following describes a force?

• a pull only

• a push only

• a push or pull or both

• neither a push nor pull

What is the unit of energy?

• Calorie

• Joules

• Newtons

• Pounds

What is the concept of the 3rd Law of Motion?

• An object at rest will remain at rest unless acted upon by an external force.

• As the net increases, the objects acceleration also increases.

• For every action, there is an equal and opposite reaction.

• A more massive object which has more inertia is more difficult to move from rest, slow down, speed up or change its direction.

Which of the following pair of quantities are the factors that affect potential energy?

• force and distance

• mass and height

• mass and speed

• time and height

What is the energy of a resting object?

• Potential Energy

• Kinetic Energy

• Thermal Energy

• None of these

What is the unit of acceleration?

• m/s

• m/s²

• Newtons

• Pounds

Which of the following examples display 1st Law of Motion?

• The boy pushing a wall and man driving a car

• Object on top of the table

• The boy pushing a wall and sitting down on the chair

• The boy pushing a wall, a ball bouncing and sitting down on the chair

How are you going to solve problems in finding the Potential Energy of an object?

• PE = mv² /2

• PE = mv²

• PE = mv

• PE = mgh

What state of matter will sound travel the fastest?

• Solid

• Liquid

• Gas

• Plasma

Which of the following objects will produce sound?

• soft objects

• vibrating objects

• radio stations

• small objects