Name: _______________________________
Class: _______________________________
Grade 7 Science: Heat and Temperature Review
Using Energy for Heat
1. Define the following terms:
Thermal Energy:
Temperature:
Thermometer:
Scale:
Celsius Scale:
Freezing Point:
Boiling Point:
Kelvin Scale:
Sensor:
Signal:
Responder:
Thermocouple:
Bi-metallic strip:
Recording thermometer:
2. List 3 examples of Heat Technologies used in everyday life.
3. Draw a picture of a bimetallic strip and explain how it works. Give an example of
a device it is commonly used in.
4. Draw a picture of a thermocouple and explain how it works. Give an example of a
device it is commonly used in.
Particle Model of Matter
5. Define the following terms:
Particle Model:
Energy:
Law of Conservation of Energy:
Contract:
Expand:
Matter:
6. What are the 3 things the Particle Model of Matter states?
7. Draw a diagram showing the particles in a solid, liquid and gas. Label each and
describe the particles.
8. What happens to the particles in a substance when the temperature changes?
9. What is the difference between Thermal Energy and Temperature?
10. Jug A has ½ C of water at 80 degrees Celsius and Jug B has ¼ C of water at 80
degrees Celsius. Which Jug has greater Thermal Energy? Why?
11. Name 3 things that give off Thermal Energy.
12. Tell me 4 important facts about Energy.
Changes of State
13. Define the following terms:
Melting (fusion):
Solidification (freezing):
Evaporation (vaporization):
Condensation:
Sublimation:
Heat Capacity:
Specific Heat Capacity:
Evaporative Cooling:
Latent Heat:
14. Solids have definite __________ and _____________. Liquids have definite
_________ but no definite ________________. Gases have no definite
__________ or _____________.
15. Complete the following table using the 6 changes of state, describe each:
RECEIVING ENERGY
RELEASING ENERGY
e.g. Melting (solid – liquid)
16. What happens to the organization of particles in a substance when the temperature
changes?
17. Energy is always transferred from a __________ energy source to a __________
energy source.
Transferring Energy
18. Define the following terms:
Radiation:
Convection:
Conduction:
Conductor:
Insulator:
Energy Source:
Radiant Energy:
19. Give an example of how Thermal Energy is transferred through each of the
following:
a) Radiation:
b) Conduction:
c) Convection:
20. Explain the difference between land breezes and sea breezes. Draw a picture of
each.
Sources of Thermal Energy
21. Define the following terms:
Chemical Energy:
Kinetic Energy:
Geothermal Energy:
Electrical Energy:
Solar Energy:
Active solar energy:
Passive solar energy:
Wind Energy:
Global Warming:
Cogeneration:
Potential Energy:
Fossil Fuels:
Energy Converters:
22. Give an example for each of the following sources of Thermal Energy:
a) Wind Energy:
b) Electrical Energy:
c) Active Solar Energy:
d) Passive Solar Energy:
Saving the Environment
23. Define the following terms:
Renewable resource:
Non-renewable resource:
24. List 3 common renewable resources found in Alberta, List 3 common nonrenewable resources found in Alberta.
25. What can you do to help conserve energy in your home?