Grade 7 Test Heat

Unit Test – Heat
Name __________________________
___ Volume
A. Energy transferred via special waves
(ex. UV and electromagnetic)
B. The temperature at which a liquid
becomes a solid
C. Heat is created when a solid resists the
flow of electrons
D. A substance that inhibits or slows the
transfer of heat
E. The amount of space matter occupies
F. Heat is created by bending and twisting
G. When a liquid becomes a gas
H. A device used to measure temperature
I. Heat is released by breaking the bonds
between atoms
J. The temperature at which a solid
becomes a liquid
K. Energy transfer through a fluid
L. Heat is created as a result of motion
and position
M. Heat produced by breaking apart
(spitting) an atom
N. A form of energy
O. The temperature when a liquid
becomes a gas
P. A device that regulates heat by
monitoring temperature
Q. The transfer of heat through solids
R. The measurement of heat
S. Heat produced by squeezing a fluid
T. Allows heat transfer to occur easily
U. The movement of particles suspended
in a solution
V. An electrical device that responds to a
difference in temperature by producing
an electric current.
W. Heat produced by pounding on a
X. When a gas becomes a liquid
Y. Heat produced due to force acting in
the opposite direction (rubbing)
___ Thermometer
___ Mechanical Energy
___ Heat
___ Radiation
___ Boiling Point
___ Distortion
___ Thermostat
___ Insulator
___ Electrical Energy
___ Temperature
___ Conductor
___ Percussion
___ Freezing Point
___ Nuclear Energy
___ Convection
___ Chemical Energy
___ Melting Point
___ Compression
___ Thermocouple
___ Brownian Motion
___ Vaporization
___ Friction
___ Conduction
___ Condensation
Circle the glass that has more energy? Use the particle theory to explain your choice. (2 Marks)
200 mL
@ 40 C⁰
100 mL
@ 40 C⁰
Answer the following questions using the graph provide. (1 Mark each)
Heating Substance A
Time (min)
What is the boiling point of substance A?
What is the melting point of substance A?
After 30 minutes, what state of matter is substance A?
Short answer- (2 Marks each)
Is it possible to add heat to a substance without changing its temperature? Explain
What happens to the average energy of the particles of milk when taken from the refrigerator and left of the
counter? Explain using particle theory and heat transfer.
A boy feels ill and touches his forehead to see if he as a fever; can he tell? Explain.
Use particle theory to explain expansion and contraction of a solid when the temperature is changed.
Give two examples of materials that slow heat transfer. Choose one and state an example where it is used.
Bonus: Use particle theory, heat transfer, and states of matter to explain why a hot glass won’t crack when adding
ice until you add water. (2 Marks)