Question One
(6)
Identify the type of potential energy in each of the following pictures below.
a)………………………………………….
b)………………………………………….
………………………………………….
………………………………………….
c)………………………………………….
d)………………………………………….
………………………………………….
………………………………………….
f)………………………………………….
………………………………………….
e)………………………………………….
………………………………………….
Question Two
(4)
Study the following Food labels and write the amount of energy contained in these food
substances per 100 g.
Sugar
Roasted Peanuts
Chocolate Bar
Cereal
Food
Amount of Energy in Kj Per 100g
a)
Sugar
b)
Roasted Peanuts
c)
Chocolate Bar
d)
Cereal
Question Three
(10)
Investigating energy transfer in Biological Systems.
PICTURE A
3.1
PICTURE B
Look at Picture A above and answer all the questions that follow.
a) Identify the energy stored in the grass that the cow ate - ………………………………
b) What happens to this energy when the grass reaches the body of the cow.
.…………………………………………………………………………………………………
…………………………………………………………………………………………………..
c) Draw an energy flow diagram (food chain type) to illustrate the process.
3.2
Look at Picture B above and answer all the questions that follow.
a) Identify the type of energy stored in the energy drink - …………………………………
b) What happens to this energy when the drink reaches the body of the athlete.
.…………………………………………………………………………………………………
…………………………………………………………………………………………………..
c) Draw an energy flow diagram (food chain type) to illustrate the process.
Question Four
(15)
Complete the following table below by identifying the potential and kinetic energy in the
systems.
Example of an energy system
1.
A boy eating an apple
2.
A pair of scissors cutting a
piece of paper
3.
An toy car operating on battery
cells
4.
A hot iron placed on a wet
cloth
5.
A falling ball
Indicate which energy
system this is.
Identify the energy
transferred in the
system