Class 7 Exam > Class 7 Notes > Footprints Class 7: Book Solutions, Notes & Worksheets > Worksheet: The Atmosphere
Worksheet: The Atmosphere | Footprints Class 7: Book Solutions, Notes & Worksheets PDF Download
| Table of contents |
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| Multiple Choice Questions (MCQs) |
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| Fill in the Blanks |
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| True/False |
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| Match the Column |
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Multiple Choice Questions (MCQs)
Q1: What is the primary function of the ozone layer within the stratosphere?
(a) To create weather patterns
(b) To absorb and scatter ultraviolet radiation from the Sun
(c) To produce oxygen for respiration
(d) To regulate Earth’s temperature
Q2: Which of the following gases is the most abundant in Earth's atmosphere?
(a) Oxygen
(b) Carbon dioxide
(c) Nitrogen
(d) Argon
Q3: In which atmospheric layer do most weather phenomena occur?
(a) Exosphere
(b) Thermosphere
(c) Stratosphere
(d) Troposphere
Q4: What is the significance of carbon dioxide in the atmosphere?
(a) It is essential for respiration in animals.
(b) It is the primary source of nitrogen for plants.
(c) It plays a crucial role in photosynthesis and the greenhouse effect.
(d) It acts as a primary buffer in Earth's oceans.
Q5: What causes winds to move from one area to another?
(a) Movement of tectonic plates
(b) Uneven heating of Earth’s surface
(c) The rotation of the Moon around Earth
(d) Changes in the Earth's magnetic field
Fill in the Blanks
Q1: The most abundant gas in the Earth's atmosphere, making up about 78%, is ______.
Q2: The layer of the atmosphere where the International Space Station orbits is called the ______.
Q3: The process by which plants convert carbon dioxide into oxygen and glucose is known as ______.
Q4: ______ refers to the short-term atmospheric conditions such as temperature and precipitation in a given area.
Q5: The ______ is the zone on Earth that receives the most direct sunlight and is characterized by consistently high temperatures.
True/False
Q1: Argon makes up approximately 21% of the Earth's atmosphere.
Q2: The exosphere is the lowest layer of the Earth's atmosphere.
Q3: Humidity is a measure of the amount of carbon dioxide in the air.
Q4: Atmospheric pressure increases with altitude.
Q5: The ozone layer is located in the mesosphere.
Match the Column
You can access the solutions to this worksheet here.
The document Worksheet: The Atmosphere | Footprints Class 7: Book Solutions, Notes & Worksheets is a part of the Class 7 Course Footprints Class 7: Book Solutions, Notes & Worksheets.
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FAQs on Worksheet: The Atmosphere - Footprints Class 7: Book Solutions, Notes & Worksheets
| 1. What are the main layers of the atmosphere? |  |
Ans. The atmosphere is divided into five main layers: the Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere. Each layer has distinct characteristics, such as temperature changes and composition.
| 2. What is the importance of the atmosphere for life on Earth? | |
Ans. The atmosphere is crucial for life as it provides oxygen for breathing, protects living organisms from harmful solar radiation, and helps regulate the Earth's temperature through the greenhouse effect.
| 3. How does air pressure change with altitude in the atmosphere? | |
Ans. Air pressure decreases with increasing altitude. As you go higher in the atmosphere, the density of air decreases, resulting in lower air pressure.
| 4. What are the major gases present in the Earth's atmosphere? | |
Ans. The major gases in the Earth's atmosphere are nitrogen (78%), oxygen (21%), argon (0.93%), and carbon dioxide (0.04%). Other trace gases are also present in very small amounts.
| 5. How does pollution affect the atmosphere? | |
Ans. Pollution negatively impacts the atmosphere by introducing harmful substances such as carbon monoxide, sulfur dioxide, and particulate matter. This can lead to health problems, climate change, and damage to ecosystems.
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