Grade 7- Heat and Temperature Final - Don Moon | Biblioteka

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 …

A. temperature

B. energy

C. thermal

D. caloric

1

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…

A heat and light

B kinetic and solar

C electricity and heat

D mechanical and light

1

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 ...

A carbon dioxide

B sulfur dioxide

C carbon monoxide

D nitrogen monoxide

1

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

A recycling programs

B dumping of toxic chemicals

C forest fires

D volcanic eruptions

1

The three main energy users are …

A home, transportation, industry

B recreation, transportation, streetlights

C shopping, transportation, industry

D home, transportation, recreation

1

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

B cost and distribution of the power

C long term storage of waste materials

D safety record it has worldwide

1

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 …

A wind

B sunshine

C shelterbelt

D sloping terrain

1

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 …

A personal

B economic

C environmental

D societal

1

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 …

A low R-value

B high R-value

C fractional R-value

D restricted R-value

2

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

2

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

4

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

1

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

1

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

3

Define conduction, convection, and radiation.

3

Give three examples of natural thermal energy.

4

Describe how passive and active solar heating systems differ.

3

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

3

Describe three non-renewable resources.

1

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