Changes Around Us : Grade 6

The changes that take place on their own are called ______.

• Artificial Changes

• Natural Changes

How is the metal rim of a wooden wheel made smaller?

• Heating then Cooling

• Cooling then Heating

• Heating only

• Cooling only

Is the burning a wax candle a slow change or fast change?

• Slow Change

• Fast Change

If we inflate a tire, the shape and size of the tire changes. This change is irreversible, but if the tire bursts while inflating, then the change is reversible.

• Yes

• No

For example you have drawn a picture on a piece of paper using crayons. This change on the piece of paper is reversible, right?

• No

• Yes

Which of the following changes can be reversed?

• Cow dung to biogas

• Wet clothes to dry clothes

• Bud to flower

• Raw egg to boiled egg

Conversion of a solid to liquid by heating is called ______.

• Condensation

• Melting

Which of the following is a chemical change?

• Moving of a wheel

• Burning of fuels