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WorksheetsLinear Themal Expansion
Total questions: 10
Worksheet time: 7mins
Name
Class
Date
1.
What is Thermal expansion?
a)
The transfer of thermal energy between materials by the collisions of particles
b)
Is a decrease in a materials volume when temperature decreases
c)
An increase in a materials volume when temperature increases
d)
The movement of fluids in a cycle because of convection
2.
4. If the atoms of an object are moving or vibrating slow, the object would feel...
a)
Cold
b)
Hot
c)
Unknown
3.
3. If the atoms of an object are moving or vibrating fast, the temperature would be...
a)
Hot
b)
Cold
c)
Unknown
4.
Objects gain heat and _________.
a)
expand
b)
contract
5.
What happens to the molecules of a solid when it is heated?
a)
Slow down
b)
Speed up
c)
Don't change speed
d)
Shrink
6.
Choose the symbol which denotes the 'coefficient of expansion'
a)
θ
b)
ρ
c)
Σ
d)
α
7.
What does the following symbol 'Δ' denote?
a)
Sum of
b)
Coefficient of Expansion
c)
Change in
d)
Temperature
8.
Select the correct formula to calculate linear change in length...
a)
ΔL = LαΔT
b)
ΔT = ΔL/Lα
c)
σ = F/A
d)
ε = ΔL/L
9.
Calculate the change in length of a 100mm aluminium bar that has increased in temperature by 55⁰C.
Take the coefficient of expansion to be 25 x 10-6
Take the coefficient of expansion to be 25 x 10-6
a)
0.258mm
b)
0.1375mm
c)
1.23mm
d)
1.37mm
10.
Select the correct formula to calculate change in temperature.
a)
ΔL = LαΔT
b)
α = ΔL/LΔT
c)
ΔT = ΔLαL
d)
ΔT = ΔL/Lα
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