Earth's Structure
What is the outermost layer of Earth that we live on?
Crust
What is the layer of gases surrounding Earth called?
Atmosphere
About what percentage of Earth's surface is covered by water?
About 70%
What star is at the center of our solar system?
The Sun
What do we call all the living and nonliving things interacting in an area?
An ecosystem
What are the huge pieces that Earth's crust is broken into called?
Tectonic plates
What are clouds made of?
Tiny water droplets and/or ice crystals
What process changes liquid water into water vapor?
Evaporation
What natural object orbits Earth?
The Moon
In the food chain grass → rabbit → fox, what does the rabbit eat?
Grass
What can form when tectonic plates push together?
Mountains
Is climate the weather today or the usual weather over a long period?
The usual weather over a long period
Is most of Earth's water fresh water or salt water?
Salt water
What causes day and night?
Earth's rotation
What do we call an organism that makes its own food?
Producer
What causes the ground to shake during an earthquake?
Movement of Earth's plates/rocks underground
Name one type of severe weather.
Tornado, hurricane, thunderstorm, blizzard, etc.
What are large, organized movements of ocean water called?
Ocean currents
What causes Earth's seasons?
Earth's tilted axis as Earth revolves around the Sun
What is a population?
Members of the same species living in the same area
What can happen when two tectonic plates move apart?
New crust can form; a rift or mid-ocean ridge can develop
What is air pressure?
The force/pressure caused by the weight of the air
What is the name for the deepest parts of the ocean floor?
Ocean trenches
What is the largest planet in our solar system?
Jupiter
What might happen to rabbits if the plants they eat suddenly disappeared?
The rabbit population would decrease because they would lose their food source.