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Gr. 7- Heat & Temp. Unit Review

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Unit 3 – Heat and Temperature Review

1.0 Technologies for Obtaining and Controlling Heat

Question 1
1.

Before 1600, people believed heat was a combination of fire and air. They thought it was an invisible fluid. What was the fluid called and explain the ‘Theory’ it was based on?

Question 2
2.

Explain the Particle Theory of Heat.

Question 3
3.

What activities are directly related to heat related technologies?
(eg. staying comfortable in our homes)

Question 4
4.

Complete the Heating Technology Timeline

Question 5
5.

What does it mean when we are asked to make sustainable choices?

2.0 Heat Affects Matter

Question 6
6.

Describe the changes that take place with the transfer of heat to and from water.

Question 7
7.

List the four main principles in the Particle Model of Matter.

Question 8
8.

Kinetic energy is the energy of movement. Describe the particles in each state of matter.

Question 9
9.

Complete the following chart that helps to show the relationship between heat, the particle model
and changes of state.

Question 10
10.

Explain the difference between thermal energy, heat and temperature in terms of kinetic energy.

Question 11
11.

How is temperature measured?

Question 12
12.

Complete the Timeline, by adding in the dates that are missing ...

3.0 Natural Phenomena and Technology Devices

Question 13
13.

Illustrate and describe 4 natural sources of Thermal Energy that are available to us.

Question 14
14.

Explain the component parts of the different applications of Solar Energy - used for heating and generating electricity.

Question 15
15.

Describe what a solar array is and where it could be used.

Question 16
16.

Draw the component parts of a thermostat and explain how it works.

Question 17
17.

Describe how a bimetallic strip can be used as a switch.

Question 18
18.

Describe each of the two types of heating systems: Local Heating and Central heating.

Question 19
19.

R-Value indicates insulating value of a particular type of material. Explain what it means.

Question 20
20.

Identify the % of heat loss in a typical house.

4.0 Benefits and Costs of Heat Technologies

Question 21
21.

What is the difference between renewable and non-renewable energy sources?

Question 22
22.

Explain the ‘COSTS’ of using fossil fuels.

Question 23
23.

Describe the costs and benefits of these alternative thermal energy technologies.
* Solar
*Wind
*Geothermal
*Nuclear
*Hydro-Electric

Question 24
24.

What does this symbol represent?

Question 25
25.

Describe ways in which energy can be used wisely in the following places: