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Jouer Test
1. 
Materials that do not allow light through them are called:
A.
transparent
B.
translucent
C.
opaque
2. 
Materials that let the light pass through them are called:
A.
transparent
B.
translucent
C.
opaque
3. 
Materials that let only some light pass through them are called:
A.
transparent
B.
translucent
C.
opaque
4. 
The angle of the ray of incidence is called:
A.
angle of refraction
B.
angle of incidence
C.
angle of reflection
5. 
The angle of the ray of reflection is called:
A.
angle of refraction
B.
angle of incidence
C.
angle of reflection
6. 
A material where the electrons flow easily is called:
A.
conductor
B.
insulator
C.
energy
7. 
A material where the electricity does not flow through it easily is called:
A.
conductor
B.
insulator
C.
energy
D.
8. 
Heat is a kind of:
A.
conductor
B.
insulator
C.
energy