Geosphere
What is the geosphere?
The solid part of Earth, including rocks, soil, and landforms.
What does the hydrosphere include?
All water on Earth.
What is the biosphere?
All living organisms on Earth.
What is the atmosphere?
The layer of gases surrounding Earth.
What are the three main layers of Earth?
Crust, mantle, and core.
Name two features that belong to the geosphere.
Mountains, rocks, soil, volcanoes, or land.
Name three parts of the hydrosphere.
Oceans, rivers, lakes, glaciers, or groundwater.
Name two types of organisms that belong to the biosphere.
Plants, animals, fungi, or microorganisms.
Which gas in the atmosphere is most important for humans to breathe?
Oxygen.
Which layer of Earth do humans live on?
The crust.
How does the geosphere interact with the biosphere?
It provides habitat, soil and minerals that plants and animals need to live.
Why is the hydrosphere important for the biosphere?
Living organisms need water to survive.
Why does the biosphere depend on the atmosphere?
Living things need oxygen and other gases to survive.
Name one way the atmosphere protects life on Earth.
It blocks harmful solar radiation and burns meteors.
Which layer is the thickest inside Earth?
The mantle.
Explain how volcanic eruptions connect the geosphere and atmosphere.
Volcanoes release gases and ash from the geosphere into the atmosphere.
How does the hydrosphere influence Earth’s climate?
Oceans store and distribute heat around the planet.
How does the biosphere affect the atmosphere?
Plants release oxygen and absorb carbon dioxide.
How does the atmosphere interact with the hydrosphere in the water cycle?
Water evaporates into the atmosphere and later falls as precipitation.
What are the two parts of the Earth’s core?
The inner core and outer core.
How can changes in the geosphere affect the hydrosphere and biosphere?
Earthquakes or volcanic activity can change rivers, oceans, and habitats.
Explain how pollution in the hydrosphere can affect the biosphere and atmosphere.
Polluted water harms organisms and can release harmful gases into the air.
Explain why the biosphere cannot exist without the geosphere, hydrosphere, and atmosphere.
Living organisms need land, water, and air to survive.
What is the greenhouse effect and why is it both essential and potentially dangerous?
The greenhouse effect is when certain gases in the atmosphere (like CO₂ and water vapour) trap heat from the Sun instead of letting it escape back into space. Without it, Earth's average temperature would be around -18°C — too cold for life as we know it. However, human activities are increasing the concentration of these gases, trapping more heat than necessary and gradually warming the planet, which disrupts climate patterns worldwide.
Explain how movement in the mantle can affect Earth’s surface.
Mantle movement causes plate tectonics, earthquakes, and volcanic activity.