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WorksheetsQuest 2.2
Total questions: 8
Worksheet time: 8mins
Name
Class
Date
1.
A mobile phone becomes hot when it is being charged because
a)
electrical energy is converted to heat energy only.
b)
electrical energy is converted to chemical and heat energy.
c)
chemical energy is converted to electrical and heat energy.
d)
chemical energy is converted to heat energy only.
2.
Thermal energy is transferred from one region of temperature R °C to another region of temperature S °C. What can you conclude from this?
a)
Temperature R is equal to Temperature S to heat energy only.
b)
Temperature R is higher that temperature S .
c)
Temperature R is lower than temperature S
d)
Temperature S is equal to the room temperature to heat energy only.
3.
What energy is stored in a dry cell?
a)
Chemical potential energy
b)
Electrical energy
c)
Kinetic energy
d)
Thermal energy
4.
The diagram shows a swinging pendulum. At which point(s) has the lowest gravitational potential energy?
a)
Point B and C
b)
Point A and D
c)
Point C only
d)
Point B only
5.
A small 40 W motor is run for an hour. How much electrical energy is converted during this time?
a)
0 J
b)
40 J
c)
2400 J
d)
144000 J
6.
The diagram shows some of the energy changes that take place when a hair dryer is switched on. What is a possible identity and value of X?
a)
Electrical energy : 9 J
b)
Sound energy : 9 J
c)
Thermal energy : 0.9 J
d)
Wind energy : 0.9 J
7.
Waves transfer ___________
a)
matter but do not transfer energy
b)
energy but do not transfer matter
c)
both matter and energy at the same time
d)
matter and energy at different times
8.
Which of the following waves can be used to sterilize medical equipment? I Gamma rays II X-rays III Ultraviolet rays IV Infrared radiation
a)
I and IV
b)
II and III
c)
I and III
d)
III and IV
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