Air

Q. We need to plant more trees because trees absorb carbon dioxide from the air, and release oxygen.

1. True
2. False

Q. What is the breeze that blows during the day time from the sea to the land?

1. Ocean breeze
2. Sea breeze
3. Land breeze
4. Desert breeze

Q. About ____ of the Earth's surface is covered in water.

1. 10%
2. 25%
3. 70%
4. 95%

Q. Who keeps our surroundings clean?

1. Driver
2. Pilot
3. Sweeper
4. Delivery Man

Q. The interaction of biotic and abiotic components is called

1. ecosystem
2. exosphere
3. lithosphere
4. food chain

Q. In which of the following layers of atmosphere do aeroplanes fly?

1. Mesosphere
2. Troposphere
3. Stratosphere
4. Exosphere

Q.

Write a note on the atmosphere?

Q. Human beings breathe in and breathe out

1. oxygen
2. carbon dioxide
3. nitrogen
4. hydrogen

Q.

The pie chart shows the composition of air.
What do X and Y represent respectively?

1. Helium, Argon
2. Carbon dioxide, Nitrogen
3. Nitrogen, Oxygen
4. Nitrogen, Carbon monoxide

Q. and fine nose hair helps to trap the dust particles in the inhaled air.

1. Mucus
2. Booger
3. Septum

Q. The gas which is used to fill the packets of potato chips is ____________.

1. nitrogen
2. oxygen
3. carbon dioxide
4. water vapour

Q. units of Nitrogen is present in every 100 units of air in our atmosphere.

1. 78
2. 28
3. 48
4. 58

Q.

Which among the following is/are example(s) of biotic components?

1. Plants

2. Soil

3. Air

4. Water

Q. Choose the abiotic component of an ecosystem from the given options:

1. Sunflower
2. Eagle
3. Earthworm
4. Soil

Q. Which type of rocks can change to metamorphic rocks?

1. Sedimentary rocks
2. Lava
3. Magma
4. Igneous rocks

Q. Where do all the needs of living things are met?

1. Air
2. Land
3. Environment
4. Water

Q. Arun is standing near the sea at night, he feels the breeze blowing from land to sea.

1. True
2. False

Q.

Nitrogen constitutes nearly ____ % of the atmosphere.

1. 21
2. 57
3. 42
4. 78

Q.

Hot air is less dense than cold air.

1. True

2. False

Q. Sort the following living beings in the order of their dependency based on the food chain.

1. Grass
2. Grasshopper
3. Frog
4. Hen
5. Human

Q. Which of the following components makes our Earth so special for us to live?

1. Air
2. Land
3. All of the above.
4. Water

Q. If there is a lack of ___________ in air, it becomes difficult to breathe properly.

1. nitrogen
2. carbon dioxide
3. water vapour
4. oxygen

Q. The percentage of nitrogen in the atmosphere is nearly:

1. 28%
2. 78%
3. 21%
4. 14%

Q. Nitrogen gas is used in packaging of chips.

1. True
2. False

Q.

Air moves from ____ pressure to ____ pressure.

1. left, right

2. right, left

3. high, low

4. low, high

Q. Ozone layer protects us from ___________.

1. UV rays
2. meteors
3. light
4. pollution

Q. Which layer of the atmosphere has the maximum amount of gases present in it?

1. Mesosphere
2. Exosphere
3. Troposphere
4. Stratosphere

Q. The liquid water on exposure to sunlight, absorbs heat and changes to .

1. rain
2. water vapour
3. snow

Q.

Which layer of the atmosphere has ozone layer in it?

1. Troposphere

2. Stratosphere

3. Mesosphere

4. Thermosphere

Q.

Which of these is not a constituent of the atmosphere?

1. Oxygen

2. Aluminium

3. Nitrogen

4. Carbon dioxide