Question

earth spheres & plate tectonics review
part 1: match each sphere with its correct description.

part 2: fill in the blanks with the correct term.
the movement of earths plates is caused by slow motion in the __________ beneath them.
a __________ boundary is where two plates move apart.
a __________ boundary is where two plates move toward each other.
a __________ boundary is where two plates slide past each other.
a __________ occurs when rocks break along a crack in the crust.
when one plate is forced under another, this process is called __________.
a __________ often forms near subduction zones when melted rock rises to the surface.

part 3: circle t (true) or f (false)
the hydrosphere includes both saltwater and freshwater. t / f
volcanoes only form at transform boundaries. t / f
earthquakes are caused by energy released along faults. t / f
the biosphere depends on all other spheres to survive. t / f

Explanation:

• Part 1:
• Geosphere: The solid part of Earth - rocks, soil, and landforms (matches with b).
• Hydrosphere: All of Earth's water - oceans, rivers, lakes, and glaciers (matches with d).
• Atmosphere: The layer of gases surrounding Earth (matches with c).
• Biosphere: All living things (plants, animals, humans, microorganisms) (matches with a).
• Part 2:
• The movement of Earth's plates is caused by slow motion in the mantle (not in the word - bank, but a key geological concept).
• A divergent boundary is where two plates move apart.
• A convergent boundary is where two plates move toward each other.
• A transform boundary is where two plates slide past each other.
• An earthquake occurs when rocks break along a crack in the crust.
• When one plate is forced under another, this process is called subduction.
• A volcano often forms near subduction zones when melted rock rises to the surface.
• Part 3:
• The hydrosphere includes both saltwater and freshwater. This is True (T) as the hydrosphere encompasses all water on Earth regardless of salinity.
• Volcanoes only form at transform boundaries. This is False (F) as volcanoes form at convergent (subduction zones) and divergent boundaries.
• Earthquakes are caused by energy released along faults. This is True (T) as the sudden release of energy along faults (cracks in the crust) causes seismic waves (earthquakes).
• The biosphere depends on all other spheres to survive. This is True (T) as living things (biosphere) need water (hydrosphere), air (atmosphere), and land (geosphere) to live.

Answer:

• Part 1:
• 1. Geosphere - b
• 2. Hydrosphere - d
• 3. Atmosphere - c
• 4. Biosphere - a
• Part 2:
• mantle, divergent, convergent, transform, earthquake, subduction, volcano
• Part 3:
• T, F, T, T