Physics
Grade-9
Easy
Question
Thermal expansion occurs in _____.
- Solids
- Liquids
- Gases
- All of the above
Hint:
- Thermal expansion defines the tendency of an object to change its dimension either in length, density, area, or volume due to heat.
The correct answer is: All of the above
- Thermal expansion is the phenomenon observed in solids, liquids, and gases. In this process, an object or body expands on the application of heat (temperature). Thermal expansion defines the tendency of an object to change its dimension either in length, density, area, or volume due to heat.
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