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7I Energy Resources L1-4 Revision

Total questions: 21

Worksheet time: 13mins

Name
Class
Date
1.

What is kinetic energy?

a)

moving energy

b)

potential energy

c)

stored energy

d)

renewable energy

2.
What kind of energy is represented in this picture?
a)
Thermal
b)
Potential
c)
Nuclear
d)
Mechanical
3.
What kind of energy does this device use?
a)
Chemical
b)
Electrical
c)
Thermal
d)
Chemical
4.
What kind of energy is represented in the picture?
a)
Thermal
b)
Chemical
c)
Sound
d)
Nuclear
5.
The glow sticks produce light for a short amount of time. The light from the glow stick is a conversion from what to what?
a)
thermal to light
b)
gravitational to potential
c)
radiant to electrical
d)
chemical to light
6.
On a roller coaster, where is maximum kinetic energy?
a)
At the bottom of a big hill
b)
When going around a corner
c)
When going upside down
d)
At the top of a big hill
7.
Energy that comes from the nucleus of an atom. A form of potential energy.
a)
chemical energy
b)
Nuclear energy
c)
Sound energy
d)
Electrical energy
8.
According to which law of energy, energy can't be created or destroyed?
a)
First law of motion
b)
The law of tacos
c)
Laws of Energy
d)
law of conservation of energy
9.
The ability to do work is
a)
power
b)
energy
c)
thermal
d)
kinetic
10.
Heat energy is also called
a)
electrical energy
b)
chemical energy
c)
light energy
d)
thermal energy
11.
A battery converts what type of energy to another?
a)
sound to kinetic
b)
light to heat
c)
mechanical to electrical
d)
chemical to electrical
12.
What machine changes electrical energy into light and sound energy?
a)
battery
b)
lightbulb
c)
alarm clock
d)
apple
13.
The purpose of the panels is to change solar energy into ____________.
a)
light energy
b)
electrical energy
c)
chemical energy
d)
mechanical energy
14.

The Law of Conservation of Energy states:

a)

Energy can created or destroyed but not transformed

b)

Energy cannot be created or destroyed, it can only transformed

c)

Energy can't be created, destroyed or transformed

d)

Energy cannot be created or destroyed.

15.

Total energy = 200J
Useful energy = 20J

Workout the efficiency of this lightbulb.
 efficiency = useful enegytotal energy in ×100efficiency\ =\ \frac{useful\ enegy}{total\ energy\ in}\ \times100  

a)

100%

b)

80%

c)

40%

d)

10%

16.

A lightbulb with efficiency of 10% would be

a)

efficient

b)

inefficient

17.

What type of transformer increases voltage?

a)

Step-Up

b)

Step-Down

18.

Why is the voltage increased in the national grid?

a)

Stops electricity being lost.

b)

Stops energy loss by heat

c)

To increase safety

d)

Stops energy loss through leaking electricity

19.
Step-down transformers...
a)
improve the efficiency of the national grid
b)
reduce the voltage to a safe level for the home
c)
both 
20.
In a fuel power station, the turbine converts the heat from the steam into...
a)
heat energy
b)
kinetic energy
c)
electrical energy
21.
In a fuel power station, the generator converts kinetic energy from the turbine into...
a)
heat energy
b)
kinetic energy
c)
electrical energy

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