WorksheetsQuest 2.3
Total questions: 8
Worksheet time: 8mins
Name
Class
Date
1.
A student drops a basketball through a window on the second floor of a building. He observes that it bounces back to a height lower than the window. Why does this happen?
a)
Energy is conserved as some energy is converted into sound and heat through air resistance and friction with the ground
b)
Energy is conserved only when there is no air resistance.
c)
Energy is not conserved because some energy is converted into sound.
d)
Energy is not conserved because of friction with the ground.
2.
Peter needs to drill a hole in the wall using a cordless portable battery electric drill shown below. What is the correct energy conversion when he is drilling a hole?
a)
Chemical potential energy-->Electrical energy + Sound energy
b)
Chemical potential energy -->Electrical energy +Kinetic energy + Sound energy
c)
Electrical energy-->Chemical potential energy + Kinetic energy + Sound energy
d)
Electrical energy -->Chemical potential energy + Sound energy
3.
The power of an oven in a bakery shop is 550 W. It takes 1 hour to bake 3 cakes. What is the total energy used by the oven?
a)
550 J
b)
730 J
c)
33 000 J
d)
1 980 000 J
4.
Which one of the following is not a form of energy?
a)
Friction
b)
Kinetic
c)
Light
d)
Sound
5.
The figure below shows a ferris wheel. At which point of the ferris wheel is gravitational potential energy the greatest?
a)
P
b)
Q
c)
R
d)
S
6.
When a hot pan is put under cold running water, thermal energy is ___________________.
a)
produced by the hot pan
b)
produced by the cold running water
c)
transferred from the cold running water to the hot pan
d)
transferred from the hot pan to the cold running water
7.
Waves transfer ________________________.
a)
matter only
b)
energy only
c)
both matter and energy
d)
neither matter nor energy
8.
Lisa tuned into the radio station 92.0 MHz to listen to some music. What does 92.0 MHz refer to?
a)
Frequency of radiowaves
b)
Frequency of sound
c)
Wavelength of radiowaves
d)
Wavelength of sound
100 %
