When small pieces of sand or soil are carried away from one location to another.
What is erosion?
100
What is the name for the outermost layer of the earth?
The crust
100
An ecosystem consists of all the living and __________ elements in a single area.
non-living
100
Are animals an example of producers or consumers?
Consumers
100
What is the force exerted by the Earth on all objects on the planet? (Hint: it pulls objects towards the center of the Earth.)
Gravity
200
A volcanic eruption is an example or a fast change to the earth's surface or a slow change?
Fast change
200
The earth's plates are floating on a layer of ________.
Magma, or melted rock
200
Name an example of a non-living element of a desert ecosystem.
answers will vary: sun, sand, air, rain, etc
200
What kind of organism can produce its own food using photosynthesis?
Producers (plants)
200
How long does it take the Earth to make one rotation around its axis?
24 hours
300
Describe what weathering is.
Weathering is when rocks are slowly broken down over time by wind, water, acid, ice, or even plants and animals.
300
How were the Hawaiian islands formed?
The Hawaiian Islands were formed by a serious of volcanic eruptions. The Islands are on top of a hot spot, a small gap in a tectonic plate where magma pushes to the surface.
300
What would happen if there were too many turtles in a reef ecosystem?
answers will vary: turtles would eat too much limu or jellyfish; balance of ecosystem would be destroyed; other plants and animals would be affected
300
How do consumers get their energy?
By eating or consuming other organisms.
300
How long does it take the Earth to make one complete revolution around the sun?
365 days (1 year)
400
What is an example of a slow change to earth's surface?
Slow changes include weathering, erosion, and deposition.
400
What are two types of volcanoes? (hint: remember the volcano's shape)
Cone volcanoes and shield volcanoes
400
Name an example of a physical or behavioral adaptation that helps an animal survive in its ecosystem.
answers will vary
400
How do decomposers get their energy?
By breaking down dead matter
400
Why do we have day and night on earth?
Because of the Earth's rotation around its axis. When the sun's light is shining directly on the earth's surface, it is day. When the Earth turns, and the sun's rays do not touch that side of the Earth, it is night.
500
Name two examples of fast changes to earth's surface.
Fast changes could be caused by landslides, earthquakes, floods, or volcanic eruptions.
500
Describe two different types of volcanic eruptions.
Some volcanoes erupt violently with gas, ash, and rock when the pressure inside the volcano builds up.
Other volcanoes erupt more gently, as hot, runny lava oozes out of the volcano.
500
Draw a food chain with 4 links that shows living and non-living organisms from an ocean ecosystem.
Answers will vary.
500
Name one specific example of a producer, a consumer, and a decomposer.
answers will vary
500
Explain why we have seasons on Earth.
Because the earth's axis is slightly tilted, the northern hemisphere is slightly closer to the sun at some times of the year, and the southern hemisphere is slightly closer to the sun at other times. Whatever hemisphere gets more sunlight has summer. Whatever hemisphere gets less sunlight has winter.