Show:
definitions
soil
ecosystems
earth
misc.
100
What is potential energy?
Energy that is stored in an object and has not yet been used.
100
What are the two things scientists use to describe soil?
color and texture
100
What is a consumer?
An organism that eats other living organisms for energy.
100
Approximately how old is the earth? (hundreds, thousands, millions or billions years old.)
Billions of years old. Over four billion.
100
The energy in a rubber band that is completely stretched out would be an example of what kind of energy?
potential
200
What is kinetic energy?
Energy that an object has when it is moving.
200
When soil is not taken care of, what can happen to it?
It can become very dry and easily be blown away by the wind.
200
What do decomposers to in an ecosystem?
Decomposers break down dead and waste matter.
200
What is the lithosphere?
Lithosphere refers to the layers of the earth which include the crust and the upper mantle.
200
What does the rock cycle show?
How rocks are formed, broken down, and how they change over time.
300
What is an observation?
When you look at and study something very carefully.
300
What does organic material do in the soil?
It breaks down into nutrients.
300
What is the role of a producer in an ecosystem?
To convert the sun's energy into energy stored as food.
300
What are earth processes?
Dynamic actions that occur both on the earth's surface and inside the earth.
300
Nitrogen, Phosphorus, and Potasium are all examples of what?
Nutrients.
400
What is a native plant?
A plant that lives and grows naturally in a certain region without any human intervention.
400
What is erosion?
The washing away of the soil by wind or water.
400
Of the following which is a consumer? rabbit owl human
ALL OF THEM!
400
Mountains, hills, valleys, beaches and dunes are all examples of what?
landforms
400
What is competition within an ecosystem?
When organisms compete for the same food or the same space.
500
What is the idea that the continents were once joined together to form a large land mass?
Pangea
500
What is deposition?
When erosion carries sediments from one place to another and the sediments are left somewhere else.
500
Of the following which is a decomposer? grass sun mushroom squirrel
mushroom
500
What is the best definition of weathering?
Cracking of rocks from wind, water, plants or animals.
500
Why does an entire food chain depend on the producer?
The producer uses sunlight to produce food.