4th Grade > Science
OUR ENVIRONMENT MCQs
Total Questions : 36
| Page 4 of 4 pages
Answer: Option A. ->
True
:
A
:
A
Tilt in the Earth's axis is the reason behind the different seasons on the Earth. Different parts of the Earth receive different amount of sunlight throughout the year. So, when north pole tilts towards the Sun, it is summer in northern hemisphere and winter in southern hemisphere.
Answer: Option A. ->
weathering
:
A
Weathering is a process where rock is worn away or broken down into smaller pieces due to natural factors like wind, water, sunlight/heat and so on.
:
A
Weathering is a process where rock is worn away or broken down into smaller pieces due to natural factors like wind, water, sunlight/heat and so on.
Answer: Option A. ->
True
:
A
:
A
Nitrogen is responsible for maintaining food products fresh. Hence, nitrogen is used in packaging of chips.
Answer: Option A. ->
Winter
:
A
:
A
When the southern hemisphere is facing towards the sun, northern hemisphere is facing away from sun marking summer and winter in regions respectively.
Answer: Option D. ->
78
:
D
:
D
Air is a mixture of gases. It contains about 78% nitrogen, 21% oxygen, 0.04% carbon dioxide, and very small amounts of other gases.
Answer: Option A. ->
Troposphere
:
A
The air around the earth contains a mixtures of gases such as nitrogen, oxygen, carbon dioxide, water vapour and dust particles. The troposphere of the atmosphere contains about 80% of the total mass of gases in the air. It holds a maximum percentage of all the essential gases responsible for life on earth.
:
A
The air around the earth contains a mixtures of gases such as nitrogen, oxygen, carbon dioxide, water vapour and dust particles. The troposphere of the atmosphere contains about 80% of the total mass of gases in the air. It holds a maximum percentage of all the essential gases responsible for life on earth.
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