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Quiz Chapter 9: Earth

10 questions · Form 1 Science Bab 9: Earth

10 questions · plays in fullscreen

Full Question List & Answer Key

Prefer reading to quizzing? All 10 questions are listed below with the answer and explanation under each one.

1. Which of the following is an Exogenic process?

  1. Volcanic eruption
  2. Weathering and erosion
  3. Mantle convection current
  4. Crustal plate movement
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Answer: B

Exogenic processes occur on Earth's surface driven by atmospheric forces, sun, and gravity (e.g., weathering, erosion).

2. Why are fossils predominantly found in Sedimentary rocks rather than Igneous rocks?

  1. Sedimentary rocks form under high heat that preserves bones
  2. Igneous rocks form from high-temperature molten rock that melts organic remains
  3. Sedimentary rocks only form deep inside Earth's core
  4. Igneous rocks are too soft to hold fossils
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Answer: B

Extremely high temperatures of liquid magma during Igneous rock formation destroy organic remains, whereas Sedimentary rocks accumulate gently over time.

3. What happens during the process of weathering?

  1. Rocks are transported by river currents to the ocean
  2. Rocks are broken down into smaller fragments by physical, chemical, or biological agents
  3. Rock fragments settle and compress at the bottom of lakes
  4. Liquid lava cools on Earth's surface
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Answer: B

Weathering is the in-situ breakdown of rocks into smaller particles by rain, temperature changes, or organisms.

4. What drives the movement of tectonic plates in Earth's crust according to endogenic theory?

  1. Solar radiation on the crust
  2. Convection currents in the mantle
  3. Gravitational pull of the moon
  4. Oceanic surface tides
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Answer: B

Thermal convection currents in the semi-fluid asthenosphere/mantle drag tectonic plates along the surface.

5. In which atmospheric layer do meteors burn up upon entering Earth's atmosphere due to friction?

  1. Troposphere
  2. Mesosphere
  3. Thermosphere
  4. Exosphere
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Answer: B

The Mesosphere is the middle atmospheric layer where friction causes most meteoroids to burn up.

6. Which scientific field involves studying fossils to understand ancient life forms and Earth's history?

  1. Seismology
  2. Paleontology
  3. Meteorology
  4. Volcanology
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Answer: B

Paleontology is the study of prehistoric life and fossils preserved in geological strata.

7. Which non-metallic economic mineral is commonly used in manufacturing cement and concrete?

  1. Tin
  2. Iron ore
  3. Limestone
  4. Gold
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Answer: C

Limestone (calcium carbonate) is a major sedimentary mineral used extensively in cement production.

8. Which sphere of the Earth encompasses all living organisms, including plants, animals, and microorganisms?

  1. Atmosphere
  2. Hydrosphere
  3. Biosphere
  4. Geosphere
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Answer: C

The Biosphere is the global ecological system integrating all living beings and their relationships.

9. What physical phenomenon triggers a Tsunami in coastal regions?

  1. Heavy seasonal monsoons
  2. Undersea earthquake or volcanic eruption displacing ocean water
  3. High solar tide cycles
  4. Rapid deforestation near coastlines
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Answer: B

Vertical displacement of the ocean floor during undersea earthquakes or volcanic activity triggers massive tsunami waves.

10. How old is the Earth estimated to be based on radiometric dating of meteorites and ancient rocks?

  1. 1 million years
  2. 100 million years
  3. 2.5 billion years
  4. 4.5 billion years
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Answer: D

Geological evidence and radiometric dating estimate the Earth's age to be approximately 4.5 to 4.6 billion years.

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