Thermal Expansion
Quiz by Smitha Ragesh
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- Q1
When objects are heated,they
contract
does not change
expand
30s - Q2
Train tracks are specifically designed to allow extra space for
Cooling
Increase in temperature
decrease in temperature
Thermal expansion
30s - Q3
A square is cut out of a copper sheet. The square is
heated uniformly. As a result, it turns into a
square with a larger area
rectangle with a smaller area
square with a smaller area
rectangle with a larger area
45s - Q4
Why do telephone wires sag in summers?
They get heated up and expand
They get cooled down and contract
They are not affected by the climate
They are made of plastic
45s - Q5
The picture shows a bimetallic strip in a fire alarm. When there is a fire outbreak, the bimetallic strip will get hot, _____________
becomes longer, open the circuit and the alarm will not ring.
does not bend
bend upwards, open the circuit and the alarm will not ring.
bend downwards, complete the circuit and the alarm rings.
45s
