WorksheetsHeat Transfer
Total questions: 18
Worksheet time: 10mins
Name
Class
Date
1.
You have one cup of boiling water and a bathtub full of 70 degree water. Which, if any, has the most heat?
a)
the cup of boiling water
b)
the bathtub full of 70 degree water
c)
they both have the same amount of heat
d)
none of the above
2.
Most substances contract when cooled because:
a)
the particles move slower and become further apart
b)
the particles move faster and become farther apart
c)
the particles move faster and become closer together
d)
the particles move slower and become closer together
3.
Which best describres why metals are used for making pots and pans for cooking?
a)
metals conduct heat and have a high melting point
b)
Metals conduct heat and have a low melting point
c)
Metals radiate heat and have a high melting point
d)
Metals radiate heat and have a low melting opoint
4.
Which materials is the best conductor of heat and electricity?
a)
air
b)
plastic
c)
copper
d)
wood
5.
A pot holder is good for picking up hot pans because its a good ________.
a)
refractor
b)
modulator
c)
insulator
d)
conductor
6.
What may happen to a bridge on hot days if it is not engineered to withstand thermal expansion and contraction?
a)
cracks may form as a result of contraction
b)
concrete may weaken as a result of contraction
c)
buckling may occur due to expansion
d)
gaps may form as a result of expansion
7.
The plastic around an electric cord is used to
a)
help electricity move through the wire
b)
stop electricity from shocking you
c)
cover the wire so it looks pretty
d)
use less wire so the cord costs less
8.
Convection is caused by
a)
high humidity
b)
unequal heating
c)
clouds
d)
erosion
9.
In which situation would you most likely experience the highest temperature?
a)
sitting in a car from 7:00 - 9:00am
b)
sitting in a car from 12:00 to 2:00 pm
c)
sitting in a car from 1:00 to 3:00 am
d)
sitting in a car from 8:00 to 10:00 pm,
10.
Which place would be coolest on a hot sunny day?
a)
forest
b)
paved parking lot
c)
downtown Asheville
d)
beach
11.
Three thermometers are placed outside on a sunny day. Which thermometer would read the highest temperature?
a)
thermometer sitting outside for two minutes
b)
thermometer sitting outside for 10 minutes
c)
thermometer sitting outside for 30 minutes
d)
thermometer sitting outside for an hour
12.
When a glass of water has reached thermal equillibrium it means...
a)
the heat is distributed evenly throughout the water
b)
the water has all evaporated
c)
the water at the top is warmer than the water at the bottom of the glass
d)
the water on top has frozen
13.
During thermal equilibrium the molecules will
a)
continue to collide and exchange energy
b)
all move at the same speed without collisions
c)
continue to lose energy
d)
grow ears and a mustache
14.
Does this example represent conduction, convection, radiation, or neither.
getting a suntan at the beach
getting a suntan at the beach
a)
conduction
b)
convection
c)
radiation
d)
neither
15.
spaghetti rising and falling in a pot of boiling water
a)
conduction
b)
convection
c)
radiation
d)
neither
16.
putting your wet shoes over a floor vent to dry them faster
a)
conduction
b)
convection
c)
radiation
d)
neither
17.
touching a metal spoon that is sitting in a cup of hot chocolate
a)
conduction
b)
convection
c)
radiation
d)
neither
18.
warming your hands over a campfire on a cold night
a)
conduction
b)
convection
c)
radiation
d)
neither
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