Where does the energy needed to make electricity come from? Select one:

a.
Fuel

b.
Heat

c.
Respiration

d.
Molecular movement

Question 2

If a marshmallow is toasted over a campfire, where did the energy to ‘toast’ the marshmallow originate?
Select one:

a.
Fire

b.
Logs

c.
Air

d.
Marshmallow

Question 3

Where does almost all of Earth’s energy come from?
Select one:

a.
The Sun

b.
Earth’s core

c.
Plants

d.
Caffeine

Question 4
Which process is responsible for turning the Sun’s energy into the energy stored in an apple?
Select one:

a.
Transpiration

b.
Respiration

c.
Decomposition

d.
Photosynthesis

Question 5

Where does Earth’s internal heat come from? Choose all correct answers.
Select one or more:

a.
The Sun

b.
Leftover from Earth’s formation

c.
Radioactivity

d.
Melted rock