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WorksheetsHeat and Waves
Total questions: 49
Worksheet time: 54mins
Name
Class
Date
1.
what is the meaning of convection?
a)
cold rises heat falls
b)
heat
c)
cold
d)
hot rises cold falls
2.
what is the meaning of conduction
a)
when heat transfers from objects that are not touching
b)
heat rise
c)
cold fall
d)
when heat transfers from objects that are touching
3.
what kind of heat is happening when the sun heats your body
a)
conduction
b)
convection
c)
density
d)
radiation
4.
Heat transfers from an area of ____temperature to an area of ___ temperature.
a)
high to low
b)
low to high
c)
high to high
5.
Ali bought an apple pie at the Taman Tasik McDonald. He finds that the apple pie filling is still hot and burnt his tongue though the pastry is already cold. Which of the following explain the above phenomenon?
a)
Apple pie filling has high specific heat capacity.
b)
Apple pie filling has low specific heat capacity.
c)
The pastry has high specific heat capacity
d)
Both the pastry and apple filling have the same specific heat capacity.
6.
Water in the ice maker of a refrigerator has a mass of 0.4 kg and temperature of 22oC. What is the temperature of the water after 33 600 J of energy has been removed from it?
(Specific heat capacity of water = 4200 J kg-1 oC-1)
(Specific heat capacity of water = 4200 J kg-1 oC-1)
a)
20oC
b)
2oC
c)
0.2oC
d)
22oC
7.
Why water is used as a cooling agent in car engine?
a)
Water has low specific heat capacity.
b)
Water has high specific heat capacity.
c)
Water is denser than oil
d)
Water has low boiling point
8.
A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C. Calculate the specific heat capacity of iron.
a)
0.46 J/gxoC
b)
1.654 J/gxoC
c)
2,567,446.875 J/gxoC
9.
How many joules of heat are needed to raise the temperature of 10.0 g of aluminum from 22°C to 55°C, if the specific heat of aluminum is 0.90 J/gx°C?
a)
297 Joules
b)
0.003 Joules
c)
297 J/gx°C
d)
0.003 J/gx°C
10.
The symbol for specific heat is .......
a)
c
b)
Q
c)
m
d)
t
11.
What is the formula to calculate heat energy required to raise the temperature of any substance?
a)
Q=mc∆t
b)
Q=mc
c)
Q= ½mv
d)
m=QC
12.
Specific heat is....
a)
The measure of kinetic energy of an objects particles
b)
A measure of the energy needed to increase the average kinetic energy of the particles
c)
The heating caused by the motion of flluid due to temperature difference
d)
The transfer of energy by electromagnetic radiation
13.
A high specific heat means...
a)
It heats up quickly with energy added
b)
It requires more energy to change temperature
14.
Which of the following is NOT true about heat?
a)
Heat moves from hot to cold
b)
Heat is a form of energy
c)
Heat cannot be transferred
d)
Heat makes molecules speed up
15.
All matter is made of _____ that are constanly moving.
a)
insulators
b)
particles
c)
convection
d)
pieces of plastic
16.
The measure of average kinetic energy of all the particles within an object is called ____________.
a)
temperature
b)
conduction
c)
radiation
d)
heat
17.
Which wave has the largest wavelength?
a)
A
b)
B
c)
C
d)
None (same wavelength)
18.
Which wave has the highest frequency?
a)
A
b)
B
c)
C
d)
None (same frequency)
19.
Which particle is a wave of light?
a)
proton
b)
neutron
c)
electron
d)
photon
20.
Which type of light has the lowest energy of this group?
a)
Radio
b)
Microwave
c)
Infrared
d)
Ultraviolet
21.
Radio waves and _______ are used in communication
a)
Microwaves
b)
Gamma rays
c)
Visible light
d)
Ultraviolet
22.
This color in the visible part of the spectrum has the lowest energy.
a)
Blue
b)
Green
c)
Red
d)
Violet
23.
Constructive interference will cause the wave to
a)
Increase its displacement
b)
Decrease its displacement
c)
Make its displacement stay the same
24.
Destructive interference is
a)
When the two waves affect each other in a negative way
b)
The two waves add together and produce a single wave of greater amplitude
c)
Are in phase
25.
What is interference?
a)
occurs when two or more waves overlap and combine
b)
occurs when two or more waves combine and neutralize each other
c)
when one waves travels alone
26.
The high or low pitch of a sound is related to the ___________ of the wave
a)
decibel
b)
amplitude
c)
frequency
d)
rest position
27.
How loud or soft a sound is, is related to the _____________ of the wave
a)
amplitude
b)
frequency
c)
wave length
d)
rest position
28.
The changing pitch of a police siren as the car moves past you
a)
sound interfernce
b)
doppler effect
c)
constructive interference
d)
destructive interference
29.
Choose the word that belongs in the sentence. A sound wave is a type of ______________ wave.
a)
parallel
b)
transverse
c)
longitudinal
d)
perpendicular
30.
Sound travels fastest through what type of medium?
a)
pond water
b)
cold air
c)
iced tea
d)
wooden desk
31.
What is "?" ?
a)
rarefaction
b)
compression
c)
expansion
d)
reflection
32.
All waves carry
a)
energy
b)
light
c)
matter
d)
particles
33.
What do we call the part of a compressional wave that is spread a part?
a)
compression
b)
rarefaction
c)
crest
d)
trough
34.
Name the type of wave that matter moves at right angles to the direction of the wave?
a)
compressional waves
b)
mechanical waves
c)
transverse waves
d)
ultraviolet rays
35.
Why would a wave change direction?
a)
Because it kept traveling through the same medium
b)
Because it went from one medium to another
c)
the amplitude was too large
d)
the frequency was too small
36.
What is a repeating disturbance or vibration that transfers or moves energy from place to place?
a)
Medium
b)
Wave
c)
Compression
d)
Rarefaction
37.
What kind of wave is pictured below?
a)
compressional wave
b)
transverse wave
c)
sound wave
d)
mechanical wave
38.
Which letter represents wavelength?
a)
A
b)
B
c)
C
d)
D
39.
Which letter represents the wave crest?
a)
A
b)
B
c)
C
d)
D
40.
Which letter represents the wave trough?
a)
A
b)
B
c)
C
d)
D
41.
The number of waves that pass in a certain amount of time is called
a)
frequency
b)
wavelength
c)
crest
d)
amplitude
42.
What does it mean to refract?
a)
bounce off
b)
to bend
c)
curve outward
d)
reflect
43.
What happens when light hits a mirror?
a)
it makes a color
b)
it reflects
c)
it makes a rainbow
d)
it passes through
44.
A student placed a pencil in a cup of water. The pencil appears broken because light-
a)
always travels in a straight line
b)
bends when it passes through water
c)
makes the water in the glass evaporate
d)
reflects the pencil on the water's surface
45.
a)
Reflection
b)
Refraction
46.
In what medium does light travel the fastest?
a)
vacuum
b)
air
c)
water
d)
glass
47.
What is the speed of light?
a)
3.0x108 ms
b)
3.0x108 m/s
c)
6.626x10-34 Js
d)
6.626x10-34 J/s
48.
Red light has a wavelength of 675 x 10-9 m. What is its frequency?
a)
2.03x1011 m
b)
4.44x1014 Hz
c)
4.44x1014 nm
d)
2.03x1011 Hz
49.
The frequency of violet light is 7.5x1014 Hz. What is its wavelength?
a)
4.0x10-7 m
b)
4.0x107 m
c)
2.25x1023m
d)
2.25x1023 Hz
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