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Eighth Grade (Grade 8) Earth Science Questions

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Grade 8 Tectonics
What is earthquake intensity?
  1. a measure of energy released
  2. a measure of seismic risk
  3. a measure of damage
  4. a measure of an earthquake's focus
Grade 8 Oceanography and Hydrology
Tides that produce the least difference between consecutive high and low tides are called
  1. neap tides.
  2. spring tides.
  3. fall tides.
  4. full tides.
Grade 8 Oceanography and Hydrology
Movements of ocean water far below the surface is called                .
  1. surface current
  2. deflection
  3. deep current
  4. coriolis effect
Grade 8 Historical Geology
The image shown could best be used for which purpose?
Geologic Cross Section 2
  1. relative dating
  2. absolute dating
  3. radiometric dating
  4. paleomagnetic dating
Grade 8 Environmental Science
The process by which certain gases (principally water vapor, carbon dioxide, and methane) trap heat that radiates from Earth.
  1. Absolute humidity
  2. Humidity
  3. Greenhouse effect
  4. Parts per million
Grade 8 Historical Geology
Which of the following does not describe the second mass extinction?
  1. half of all animal and plant life died
  2. dinosaurs became extinct
  3. the primordial ooze occurred
  4. the Sun was blocked and much plant life died, resulting in many animals dying
Grade 8 Earth Science
Match the Earth's sphere/subsystems to their appropriate description.
__ Atmosphere A. All solid, liquid, and gaseous water on Earth
__ Biosphere B. All the air in the Earth's system
__ Hydrosphere C. All hard solid land of the Earth's surface (crust)
__ Lithosphere D. All life forms on Earth
Grade 8 Tectonics
What measures an earthquake's magnitude?
  1. Mercalli scale
  2. Interval scale
  3. Richter scale
  4. Ratio scale
Grade 8 Environmental Science
Most of the world's fossil fuel reserves are made up of                .
  1. oil
  2. natural gas
  3. coal
  4. waste rock
Grade 8 Earth's Layers
Which of the following does NOT play a role in mantle convection?
  1. gravity
  2. density
  3. temperature
  4. magnetism
Grade 8 Soil
Which layer contains the oldest fossils?
  1. Layer 1
  2. Layer 2
  3. Layer 3
  4. Layer 4
Grade 8 Tectonics
The                 is where about 80% of earthquakes occur.
  1. Antarctic Plate
  2. Ring of Fire
  3. Hot Spot
  4. Epicenter
Grade 8 Environmental Science
Solar energy cannot
  1. collect energy from the Sun.
  2. provide power during the night.
  3. be used to generate electricity.
Grade 8 Environmental Science
Plants, wood, and animal waste are all examples of
  1. inorganic matter.
  2. fossil fuels.
  3. biomass.
  4. nonrenewable resources.
Grade 8 Atmosphere
This is a rotating, cone-shaped column of air that goes downward from the base of a thunderstorm.
  1. funnel cloud
  2. cumulus cloud
  3. stratus cloud
  4. cirrus cloud
Grade 8 Historical Geology
When did geologic time begin?
  1. about 4.6 million years ago
  2. about 4.6 thousand years ago
  3. about 4.6 years ago
  4. about 4.6 billion years ago
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