Free Environment and Atmosphere MCQs with Answers
303 Environment and Atmosphere MCQs from Everyday Science, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Environmental science covers ecosystems, food chains and webs, energy flow, biogeochemical cycles, biodiversity, natural resources and population effects. Atmospheric study includes the layers and composition of air, weather and climate, greenhouse gases, global warming, ozone depletion, acid rain and pollution, with climate change distinguished from ordinary weather variation.
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- A. Troposphere
- B. Stratosphere
- C. Mesosphere
- D. Thermosphere
Explanation: The ozone layer lies in the stratosphere, roughly 15 to 35 kilometres above the earth, where it absorbs most of the sun’s harmful…
Correct answer: Stratosphere- A. Birds
- B. Languages
- C. Soils
- D. None of these
Explanation: Pedology is the scientific study of soil, including its formation, composition, classification, and distribution.
Correct answer: Soils- A. Hydrosphere
- B. Cryosphere
- C. Frigid Zone
- D. Biosphere
Explanation: The cryosphere includes all frozen water on Earth, including glaciers, ice sheets, sea ice, snow and permafrost.
Correct answer: Cryosphere- A. Scatters blue light
- B. Reflects blue light
- C. Transmits blue light
- D. Has actual blue cover
Explanation: Air molecules scatter the shorter blue wavelengths more strongly than the longer red wavelengths, so blue light reaches the observer from…
Correct answer: Scatters blue light- A. Carbon dioxide
- B. Chlorofluorocarbons
- C. Nitrogen oxides
- D. Methane
Explanation: Chlorofluorocarbons reach the stratosphere, where ultraviolet radiation releases chlorine atoms that catalytically destroy ozone.
Correct answer: Chlorofluorocarbons- A. 6.9
- B. 7.6
- C. 7.1
- D. none
Explanation: The 8 October 2005 Kashmir earthquake in Pakistan had a commonly reported magnitude of 7.6 on the Richter scale.
Correct answer: 7.6- A. Dobson
- B. Dalton
- C. Cuolomb
- D. none
Explanation: The Dobson unit measures the total amount of ozone in an atmospheric column.
Correct answer: Dobson- A. Mesosphere
- B. Stratosphere
- C. Lithosphere
- D. None
Explanation: The lithosphere is the rigid outer layer of Earth and is broken into major and minor tectonic plates.
Correct answer: Lithosphere- A. Ionizing Radiations
- B. Non Ionizing Radiation
- C. Visible light
- D. None
Explanation: Ultraviolet radiation is conventionally grouped as non-ionizing radiation in basic science because most UV lacks enough energy to remove…
Correct answer: Non Ionizing Radiation- A. Saudi Arabia
- B. Italy
- C. Japan
- D. None
Explanation: The Equator crosses countries such as Ecuador, Kenya, Indonesia and Brazil, but it crosses none of the three countries listed.
Correct answer: None- A. 80
- B. 200
- C. 120
- D. None
Explanation: Useful sunlight generally penetrates the ocean's euphotic zone to about 200 metres, although the exact depth varies with water clarity.
Correct answer: 200- A. A sea bird
- B. A beetle
- C. A fruit
- D. None
Explanation: An albatross is a large ocean-going seabird known for its very long wings and efficient gliding over the sea.
Correct answer: A sea bird- A. Carbon dioxide
- B. Carbon monoxide
- C. Carbon tetrachloride
- D. None of the above
Explanation: Carbon dioxide absorbs outgoing infrared radiation and helps trap heat in the atmosphere, strengthening the greenhouse effect when its…
Correct answer: Carbon dioxide- A. Mesosphere
- B. Troposphere
- C. Stratosphere
- D. ionosphere
Explanation: The stratosphere contains the ozone layer, where most atmospheric ozone absorbs harmful ultraviolet radiation.
Correct answer: Stratosphere- A. Diatonic scale
- B. Fahrenheit Scale
- C. Richter scale
- D. Celsius Scale
- E. None of these
Explanation: A seismograph records earthquake vibrations, while the Richter scale expresses the earthquake's magnitude.
Correct answer: Richter scale- A. Trench
- B. Mariana Trench
- C. Mangrove
- D. Groove
- E. None of these
Explanation: The Mariana Trench in the western Pacific contains Challenger Deep, the deepest known point on Earth's ocean floor.
Correct answer: Mariana Trench- A. North pole
- B. South pole
- C. middle of the earth
- D. Equator
- E. None of these
Explanation: Antarctica surrounds the geographic South Pole and is the southernmost continent.
Correct answer: South pole- A. Parasite
- B. Scavenger
- C. Predator
- D. Mammal
- E. None of these
Explanation: A predator actively captures and kills living prey for food. A scavenger mainly feeds on animals that are already dead, while a parasite…
Correct answer: Predator- A. Seedless fruits
- B. Parthenogenesis fruits
- C. Parthenocarpic fruits
- D. placental fruits
- E. Organic fruits
Explanation: Parthenocarpic fruits develop without fertilisation, so they normally contain no mature seeds; bananas are a common example.
Correct answer: Parthenocarpic fruits- A. Glaciers
- B. Desert
- C. Islands
- D. Volcanoes
- E. Fertile land
Explanation: An oasis is a fertile, watered place surrounded by desert, usually formed where groundwater reaches the surface.
Correct answer: DesertEnvironment and Atmosphere MCQs: common questions
Are these Environment and Atmosphere MCQs free?
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There are 303 Environment and Atmosphere MCQs in the Everyday Science bank, shown 20 to a page with the correct answer and an explanation on each.
Does every Environment and Atmosphere MCQ have an explanation?
Yes. Each Environment and Atmosphere question shows the correct option and a written explanation of why it is correct, so a wrong answer teaches you something rather than just being marked wrong.
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