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Heat Transfer

Total questions: 35

Worksheet time: 55mins

Name
Class
Date
1.

Boiling Water

a)

Conduction

b)

Convection

c)

Radiation

2.

Curling Iron

a)

Conduction

b)

Convection

c)

Radiation

3.

Weather Patterns

a)

Conduction

b)

Convection

c)

Radiation

4.

Sun Bathing

a)

Conduction

b)

Convection

c)

Radiation

5.

Mantle

a)

Conduction

b)

Convection

c)

Radiation

6.

Feet on Hot Sand

a)

Conduction

b)

Convection

c)

Radiation

7.

Lava Lamp

a)

Conduction

b)

Convection

c)

Radiation

8.

Hot Air in a Toaster

a)

Conduction

b)

Convection

c)

Radiation

9.

Microwaving Food

a)

Conduction

b)

Convection

c)

Radiation

10.

Heat Lamps

a)

Conduction

b)

Convection

c)

Radiation

11.

Cold Pack on Person

a)

Heat is transferred from the cold pack to the person.

b)

Heat is transferred from the person to the cold pack

c)

The cold pack is getting warmer. The person is getting colder.

d)

The cold pack is getting colder. The person is getting warmer.

12.

Hand Warmer in a Hand

a)

Heat is being transferred from the hand warmer to the hand.

b)

Heat is being transferred from the hand to the hand warmer.

c)

The hand is getting warmer. The hand warmer is getting cooler.

d)

The hand warmer is getting warmer. The hand is getting cooler.

13.
A chair is several feet from a fireplace. The side of the chair facing the fireplace gets warm due to
a)
conduction
b)
convection
c)
radiation
14.
A house burns down. The vinyl siding of the house next door warps due to
a)
conduction
b)
convection
c)
radiation
15.
Why do we wear sweaters in cold weather?
a)
To keep cold out.
b)
To generate heat.
c)
To reduce heat loss.
d)
All of the above.
16.
If you put a metal spoon and a wooden spoon into a pot of boiling water, one will become too hot to touch.  Why?
a)
Metals conduct heat better than wood.
b)
Wood conducts heat better than metals.
c)
Metals pull in heat because heat is attracted to metals.
d)
Wood isn't as strong as metals.
17.
Molecules in cold things move more _________
than in hot things.
a)
quickly
b)
slowly
c)
happily
d)
merrily
18.
In heat transfer, heat always flows from the _______________ substance to the _______________ substance.
a)
Hotter to colder
b)
Colder to hotter
c)
Hotter to hotter
d)
Colder to colder
19.
Warm air rises and the cool air sinks demonstrates this type of heat transfer. 
a)
conduction
b)
convection
c)
radiation
d)
Insolation 
20.

The quicker a molecule moves, the warmer it is

a)

True

b)

False

21.
What is the definition of CONDUCTION?
a)
When heat is transferred from objects like rays of light or electromagnetically.
b)
a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
c)
When heat transfers from objects that are touching.
d)
When heat transfers through the heater or AC in your house.
22.
Heat transfers from an area of ____temperature to an area of ___ temperature.
a)
high to low
b)
low to high
c)
high to high
d)
It can travel high to low and low to high. 
23.
On a hot day, the upstairs rooms in a house are usually hotter than the downstairs rooms. Why?
a)
Cool air is less dense than hot air.
b)
Warm air rises and cool air sinks
c)
 The roof insulation warms the air
d)
 Heat rises
24.
What happens when ice cubes melt in a glass?
a)
Heat travels from the ice to the warmer water.
b)
No energy is transferred.
c)
Heat is transferred from the warmer water to the ice cubes.
d)
The water warms up due to the humidity
25.
What is the definition of CONVECTION
a)
When heat transfers through waves.
b)
When heat transfers from objects that are touching.
c)
a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
d)
Heat traveling from the sun
26.
Which of the following is an example of convection?
a)
A hair dryer is drying up your hair.
b)
When the AC or heater changes the temperature.
c)
When a car engine turns hot after being turned on.
d)
When you are making soup and the water is rising and lowering.
27.

As water in a freezer turns to ice, the freezer air absorbs heat from the water

a)

True

b)

False

28.
Which direction will the heat flow while this person holds a hot cup of tea?
a)
from the cup to her hand
b)
from her hand to the cup
c)
no heat is transferred
29.
Which direction will the heat flow while this ice cap melts?
a)
there is no heat transfer
b)
from the icecap to the water
c)
from the water to the icecap
30.
The baby chickens are kept warm from the heat lamps.
a)
conduction
b)
convection
c)
radiation
31.
In this experiment, the WARM red dye and the COLD blue dye was placed in the water at the same time. The warm red dye rose to the top while the cold blue dye sank to the bottom.
a)
conduction
b)
convection
c)
radiation
32.
The chocolate bunny and the iron.
a)
conduction
b)
convection
c)
radiation
33.
The chocolate bunny and the blow dryer.
a)
conduction
b)
convection
c)
radiation
34.
The chocolate bunny and the lamp.
a)
conduction
b)
convection
c)
radiation
35.
Poor conductors like wood and plastic are called:
a)
conductors
b)
insulators
c)
burners

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