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Grade 7- Heat and Temperature Final

Last updated about 5 years ago

21 questions

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Question 1

1.

In early times, people observed that heat – because it seemed to flow from a hot place to a cold place – must be an invisible fluid that they called …

B. energy

A. temperature

C. thermal

D. caloric

Question 2

2.

The Franklin stove, invented by Benjamin Franklin, is a heating technology that has a dual purpose. Besides heating a room, it was also used as a

D bar-b-cue grill

A smokehouse

C cooking stove

B foot warmer

Question 3

3.

Co-generation is a process in which two forms of energy are produced at the same time from one energy source. The two forms of energy produced are usually …

D mechanical and light

A heat and light

B kinetic and solar

C electricity and heat

Question 4

4.

A dangerous by-product, from the use of fossil fuels (coal, natural gas and oil) enters the atmosphere when industries burn this fuel. A by-product can react with water in the air to form acid rain. The by-product is ...

B sulfur dioxide

A carbon dioxide

D nitrogen monoxide

C carbon monoxide

Question 5

5.

Thermal energy has the power to hurt us and destroy our possessions. All of the following practices are dangerous and harmful EXCEPT ...

C forest fires

B dumping of toxic chemicals

A recycling programs

D volcanic eruptions

Question 6

6.

The three main energy users are …

D home, transportation, recreation

C shopping, transportation, industry

B recreation, transportation, streetlights

A home, transportation, industry

Question 7

7.

Canadian scientists developed the Canada Deuterium-Uranium reactor to provide nuclear energy in parts of Canada and to sell to other countries. The major problem with this reactor is the …

A long time to produce thermal energy

C long term storage of waste materials

B cost and distribution of the power

D safety record it has worldwide

Question 8

8.

An alternative for thermal energy that is inexpensive, practical and renewable, and does not require increased technological advances is wind power. This technology utilizes a windmill to generate electrical power that can then be converted into thermal energy. Unfortunately this alternative is not practical where there is no …

C shelterbelt

B sunshine

D sloping terrain

A wind

Question 9

9.

The costs of treating lakes, that have been damaged by acid rain, have to be paid for by every citizen. This makes this type of cost …

C environmental

B economic

A personal

D societal

Question 10

10.

Insulators are rated by their insulating ability. R-value is given to each material that is used in the construction of a building. The best insulating product would have a …

D restricted R-value

C fractional R-value

A low R-value

B high R-value

Question 11

11.

Is heat a substance or a form of energy? Explain your answer.

Question 12

12.

Describe one example of heat technology from the past and one example from the present day.

Question 13

13.

List the four main ideas of the particle model of matter.

Question 14

14.

How does the particle model explain a change of state of matter?

Question 15

15.

A metal bolt heated to a high temperature will be slightly larger than if it was in a freezer. Why?

Question 16

16.

Define conduction, convection, and radiation.

Question 17

17.

Give three examples of natural thermal energy.

Question 18

18.

Describe how passive and active solar heating systems differ.

Question 19

19.

Explain how a thermostat works and why it is important for safety.

Question 20

20.

Describe three non-renewable resources.

Question 21

21.

When you have completed all the questions and watched ALL the videos draw a happy face in the box to indicate that you have completed all of this exam.