Atmosphere
What are the two most abundant gases in the Earth's atmosphere?
Nitrogen (78%) and Oxygen (21%)
True or False:
Most freshwater on Earth is found in rivers and lakes.
False (Most is locked in glaciers and groundwater)
What is the name of the rigid outer layer of the Earth made up of the crust and upper mantle?
Answer: Lithosphere
Which biome is known for the highest biodiversity and rainfall?
Answer: Rainforest
True or False: The ozone layer is found in the troposphere.
False
What percentage of Earth's water is freshwater?
3%
True or False: The Earth's inner core is liquid.
Answer: False (It is solid)
True or False:
The biosphere is completely independent of other Earth subsystems.
False (It depends on atmosphere, hydrosphere, and geosphere)
Which layer of the atmosphere is where auroras occur?
Thermosphere
Which ocean zone receives the most sunlight and supports the most marine life?
Epipelagic Zone
What causes tectonic plates to move?
Answer: Convection currents
Which of the following is not a terrestrial biome?
A. Tundra
B. Desert
C. Marine
D. Temperate Forest
C. Marine
Explain how the layers of the atmosphere protect life on Earth.
Answer: Each layer filters harmful radiation, burns up meteors, and provides conditions necessary for life (like oxygen and weather).
Describe how water in the hydrosphere interacts with the atmosphere during a typhoon.
Answer: Warm ocean water evaporates into the atmosphere, feeding the typhoon with moisture and energy.
Explain the role of the geodynamo in Earth’s magnetic field.
The geodynamo in the liquid outer core generates Earth's magnetic field through the movement of molten iron.
Give an example of how a disturbance in one subsystem (like the atmosphere) can impact the biosphere.
Air pollution (atmosphere) can harm plants and animals (biosphere), leading to health issues and death.