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Year 9’s quiz on Energy

Total questions: 30

Worksheet time: 18mins

Name
Class
Date
1.

What is the equation for Gravitational Potential Energy?

a)

mgh

b)

mgk

c)

egh

d)

fxy

2.

YOU NEED A CALCULATOR

Timmy chucks a ball in the air, it goes up 27.64m, the ball weighs 0.04kg and the gravitational field strength is 9.81. What is the gravitational potential energy at the top of the throw? GPE = mgh

a)

13.45J

b)

10.85J

c)

11.75J

d)

12.65J

3.

What energy is used in ICBMs (nuclear missiles) in the explosion?

a)

Magnetic

b)

Nuclear

c)

Elastic

d)

Gravitational

4.

What is the equation for elastic potential energy?

a)

E=12mv2E=\frac{1}{2}mv^2

b)

E=12mv2E=\frac{1}{2}mv^2

c)

E=12ke2E=\frac{1}{2}ke^2

5.

What energy will the equation E=12mv2E=\frac{1}{2}mv^2 give you?

a)

Nuclear

b)

Kinetic

c)

Thermal

d)

Magnetic

6.

What is the energy store called in anything that stretches, like a spring?

a)

Kinetic

b)

Elastic

c)

Thermal

7.

When an apple is thrown up, what is it gaining?

a)

Thermal Energy

b)

Mechanical Energy

c)

Gravitational Potential Energy

8.

Can energy be created and destroyed?

a)

Yes

b)

No

c)

Maybe

9.

What energy store increases when brakes are applied in a car?

a)

Gravitational Potential Energy

b)

Thermal Energy

c)

Elastic Energy

10.

Which two ways can energy be transferred?

a)

Melting

b)

Heating

c)

Gasing

d)

Radiation

11.

What is the energy called in anything where energy is transferred by light or sound?

a)

Thermal

b)

Kinetic

c)

Radiation

d)

Mechanically

12.

True or False, you can destroy energy?

a)

True

b)

False

13.

“Even when energy is wasted or dissipated it isn’t gone.”

Is this statement true?

a)

Yes

b)

No

14.

Can energy be stored?

a)

Yes

b)

No

15.

Select the 3 energy stores?

a)

Kinetic

b)

Upthrust

c)

Thermal

d)

Friction

e)

Elastic

16.

Can you calculate energy transfers using the conservation of energy?

a)

Yes

b)

No

c)

What is the conservation of energy?

17.

What causes mechanical energy transfers?

a)

Fields

b)

Forces

c)

Figures

d)

Figs

18.

“Energy can be created and destroyed, not transferred.”

True or False?

a)

True

b)

False

19.

The equation for Elastic Potential Energy is E=ke2×2.5E=ke^2\times2.5 ?

True or False?

a)

True

b)

False

20.

Can energy be stored?

a)

Yes

b)

No

21.

What energy store transfers happen when a car hits a wall?

a)

Kinetic into Thermal

b)

Gravitational into Chemical

c)

Nuclear into Kinetic

d)

Kinetic into sound

22.

How many ways can energy be transferred?

a)

1 way

b)

2 ways

c)

3 ways

d)

4 ways

23.

What is the gravitational field strength on Earth?

a)

9.81 N/kg

b)

8.91 N/kg

c)

98.1 N/kg

d)

9.18 N/kg

24.

Forces cause (a)   energy transfers.

25.

What is the equation for Gravitational Potential Energy?

a)

E=mghE=mgh

b)

E=mghE=\frac{mg}{h}

c)

E=mgaE=mga

d)

E=mhgE=\frac{mh}{g}

26.

What is energy measured in?

a)

Jules, J

b)

Joules, J

c)

Jewels, J

d)

Jooles, J

27.

Energy is transferred ________________ from a car wheels kinetic energy store to its thermal energy store when the brakes are applied.

a)

Chemically

b)

Mechanically

28.

Energy is transferred to the kinetic energy store when an object _____________?

a)

Slows down

b)

Speeds up

c)

Stretches

29.

Energy is usually wasted to the surroundings by ______ and ______ ?

a)

Heating

b)

Chemical

c)

Elastics

d)

Sound

30.

YOU NEED A CALCULATOR!

A car has a mass 2500kg and travelling at 20 m/s, what is its kinetic energy?

a)

500,000 J

b)

550,000 J

c)

750,000 J

d)

600,000 J

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