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Energy Grid

Total questions: 37

Worksheet time: 19mins

Name
Class
Date
1.

What is the electrical grid?

a)

a way to create and share electrictiy

b)

a way to share care and love to others

2.

What can transport or share electricity from place to place

a)

a car

b)

power lines

3.

Electricity can be hot

a)

Yes

b)

No

4.

The law of conservation of energy says that energy cannot be created or destroyed.

a)

False

b)

True

5.

What type of transformer increases voltage?

a)

Step-Up

b)

Step-Down

6.

What quantities are changed in a step-up transformer?

a)

Voltage increases

b)

Voltage decreases

c)

Current increases

d)

Current decreases

7.

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

8.
Step-up transformers...
a)
improve the efficiency of the national grid
b)
reduce the voltage to a safe level for the home
c)
both 
9.
Step-down transformers...
a)
improve the efficiency of the national grid
b)
reduce the voltage to a safe level for the home
c)
both 
10.
In a fuel power station, the generator converts kinetic energy from the turbine into...
a)
heat energy
b)
kinetic energy
c)
electrical energy
11.
What is the difference between a conductor and an insulator?
a)
An insulator allows electricity to flow through it easily and a conductor does not
b)
A conductor allows electricity to flow through it easily and an insulator does not.
c)
An insulator is magnetic and a conductor is not
d)
A conductor is magnetic and an insulator is not
12.
What is the purpose of a switch?
a)
To open and close the circuit.
b)
To carry the electricity through the circuit.
c)
To make a fun clicking sound
d)
To supply the power to the circuit
13.

Electricity happens with the flow of

a)

electrons.

b)

water

c)

sand

14.

Electrons have a _______________.

a)

negative charge

b)

positive charge

15.

Protons have a ___________________.

a)

Positive

b)

Negative

16.
Is it possible to CREATE electrons?
a)
Yes, that's what static electricity is.
b)
No, you can move them, but they are never created or distroyed.
c)
Sometimes, it depends on the voltage.
d)
Sometimes, it depends on the element.
17.
The parts of the national grid are
a)
furnace-boiler - turbine-generator-
b)
Power station - step up transformer- Grid - Step down transformer - consumers
c)
furnace-boiler - generator-turbine-
18.
The function of a step-up transformer is..
a)
to increase the voltage to reduce current to make the heating effect smaller
b)
To decrease voltage for safety
c)
To store excess energy and release it when necessary
19.
The function of a step-down transformer is..
a)
to increase the voltage to reduce current to make the heating effect smaller
b)
To decrease voltage for safety
c)
To store excess energy and release it when necessary
20.

What part of the electricity grid is this natural gas power plant in?

a)

generation

b)

transmission

c)

distribution

21.

What part of the electricity grid is this solar farm in?

a)

generation

b)

transmission

c)

distribution

22.

The power lines in this picture deliver electricity to the homes and businesses along this street. These lines are part of the grid's ___ system.

a)

generation

b)

transmission

c)

distribution

23.

What part of the electricity grid is this nuclear power plant in?

a)

generation

b)

transmission

c)

distribution

24.

What part of the electricity grid are these high voltage power lines in?

a)

generation

b)

transmission

c)

distribution

25.

What part of the electricity grid is this wind turbine farm in?

a)

generation

b)

transmission

c)

distribution

26.

The workers in this picture are repairing neighborhood power lines. These lines are part of the grid's __ system.

a)

generation

b)

transmission

c)

distribution

27.

These power lines carry high voltage electricity for hundreds of miles across California. These lines are part of the grid's ___ system.

a)

generation

b)

transmission

c)

distribution

28.

What are the three main parts of the electricity grid? Check all three.

a)

pumping stations

b)

transmission

c)

copper wires

d)

distribution

e)

generation

29.

High voltage power lines that carry electricity for long distances are part of the grid's ___ system.

a)

generation

b)

transmission

c)

distribution

30.

Power plants are part of the grid's ___ system.

a)

generation

b)

transmission

c)

distribution

31.

This image shows the ___.

a)

electricity grid

b)

water system

c)

road and highway system

32.

How can voltage be described?

a)

Electricity from power plant

b)

Electricity level

c)

Lower voltage

d)

Customer voltage

33.

How can high voltage transmission lines be described?

a)

Electricity level

b)

Electricity from power plants

c)

Lower voltage electricity

d)

Customer voltage level

34.

How do substations work within the power grid?

a)

They bring electricity from power plants

b)

They lower the voltage

c)

They lower the voltage to go to customers

d)

They monitor the power grid

35.

How are distribution substations different from substations?

a)

They bring electricity from power plants

b)

They lower the voltage

c)

They lower the voltage to go to customers

d)

They monitor the power grid

36.

How can high voltage transmission lines be described?

a)

Electricity level

b)

Electricity from power plants

c)

Lower voltage electricity

d)

Customer voltage level

37.

How do control centers support the energy grid?

a)

They bring electricity from power plants

b)

They lower the voltage

c)

They lower the voltage to go to customers

d)

They monitor the power grid

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