Match the terms in column I to those in column II.

Column I Column II

a. Sparks are produced when a pair of scissors is sharpened against a grinding wheel. i. It makes them rough and increases friction.

b. A piece of chalk wears out as it is used ii. Friction produces heat.

c. Trolleys have wheels. iii. Friction causes wear and tear.

d. The leather soles of shoes are rubbed on a rough surface. iv. Powder reduces friction.

e. A surgeon powders his hands before pulling on his plastic gloves. v. Rolling reduces friction.

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Solution

Column I Column II

a. Sparks are produced when a pair of scissors is sharpened against a grinding wheel. ii. Friction produces heat.

b. A piece of chalk wears out as it is used. iii. Friction causes wear and tear.

c. Trolleys have wheels. v. Rolling reduces friction.

d. The leather soles of shoes are rubbed on a rough surface. i. It makes them rough and increases friction.

e. A surgeon powders his hands before pulling on his plastic gloves. iv. Powder reduces friction.

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Column I	Column II
a. Sparks are produced when a pair of scissors is sharpened against a grinding wheel.	i. It makes them rough and increases friction.
b. A piece of chalk wears out as it is used	ii. Friction produces heat.
c. Trolleys have wheels.	iii. Friction causes wear and tear.
d. The leather soles of shoes are rubbed on a rough surface.	iv. Powder reduces friction.
e. A surgeon powders his hands before pulling on his plastic gloves.	v. Rolling reduces friction.

Column I	Column II
a. Sparks are produced when a pair of scissors is sharpened against a grinding wheel.	ii. Friction produces heat.
b. A piece of chalk wears out as it is used.	iii. Friction causes wear and tear.
c. Trolleys have wheels.	v. Rolling reduces friction.
d. The leather soles of shoes are rubbed on a rough surface.	i. It makes them rough and increases friction.
e. A surgeon powders his hands before pulling on his plastic gloves.	iv. Powder reduces friction.