Air and Water Quiz

Read the clues and identify the gas present in air: Clue 1 - I am the most common gas in the air. Clue 2 - I am not required for breathing.

1. Nitrogen
2. Carbon dioxide
3. Air
4. Oxygen

Answer: (a) Nitrogen

If a candle burns longer in Room A than Room B, what could be different?

1. Room B has more oxygen
2. Room A has more oxygen
3. Room A has more carbon dioxide
4. Room B has more nitrogen

Answer: (b) Room A has more oxygen

Gina dips a bubble wand into soap water and many bubbles formed when she blew. What is the reason behind this?

1. soap water creates magic
2. The wand has holes that make bubbles
3. Air fills the soap film and forms bubbles
4. Water turns into bubbles on blowing

Answer: (c) Air fills the soap film and forms bubbles

Frank weighed a deflated football and then pumped air into it. What will happen to its weight?

1. Remain the same
2. Become zero
3. Increase because air adds weight
4. Decrease because air is light

Answer: (c) Increase because air adds weight

Which of the following activities cannot happen without air?

Answer: (d)

Select the correct match: 1. River - liquid 2. Steam - solid 3. Eraser - gas 4. Milk - solid 5. Smoke - gas

1. 2 and 3
2. 1 and 5
3. 3 and 4
4. 1 and 3

Answer: (b) 1 and 5

Derek helped his father in watering the garden in the evening. Why is this activity important?

1. Water protects plants from wind
2. Water makes the plant look beautiful
3. Water cleans the flowers
4. Plants need water to grow

Answer: (d) Plants need water to grow

What happens when you keep stirring sugar in cold water for a long time?

1. It melts quickly
2. It freezes into ice
3. It floats on water
4. It dissolves slowly

Answer: (d) It dissolves slowly

Brian kept a bottle of water in the freezer. What happens to water when it is kept in a freezer?

1. It changes into solid ice cubes
2. It disappears
3. It melts into liquid form
4. It changes its colour

Answer: (a) It changes into solid ice cubes

Identify the activity that does NOT require water.

1. cooking food
2. making bed
3. brushing teeth
4. painting a picture

Answer: (b) making bed