Question

The diagram below shows a block of wood stuck in a metal container
Which of these is the best way to remove the block of wood undamaged?

A. Burn the wood
B. Drill holes in the metal container
C. Submerge the container in water
D. Heat the metal container​

Answer 1

Heating the metal container​ will help remove the block of wood undamaged.

What is thermal expansion?

• When a metal is heated it expands.

• The increase in temperature causes the atoms to slide away and this results in the expansion of the metal.
• Due to expansion, its length increases.
• This process is known as 'thermal expansion'.
• The degree of thermal expansion depends on the nature of the metal.

So, the correct answer is D.

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