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100
a hard, solid part of Earth that is not soil or metal
rock
100
soil that is made of sand, silt, clay and pieces of living things that have died
loam
100
a useful material that comes from Earth
natural resource
100
a large body of moving ice
glacier
100
how something feels
texture
200
something harmful added to land, air, or water
pollution
200
the top layer of Earth
soil
200
a safe place to live
refuge
200
a nonliving material that comes from Earth
mineral
200
a natural feature on Earth
landform
300
anything that is burned to make heat or power
fuel
300
to change something so it can be used again
recycle
300
a large, flat area of land
plain
300
a natural resource that cannot be replaced
possible answer: oil, gas
300
a natural resource that can be replaced
possible answer: trees, plants
400
a natural resource that cannot be used up
possible answers: sunlight, water, air
400
what kind of soil is being described? grainy, dry, loose, rough, tan
sandy soil
400
what are three things that cover Earth's surface?
water, soil, and plants
400
What kind of soil is being described? black, full of nutrients, made of sand, clay, silt, has pieces of dead plants and animals
loam
400
what kind of soil is being described? packed, smooth, soft and sticky, red, contains iron
clay soil
500
list three natural resources
possible answers: water, soil, trees, sunlight, rocks, plants, air
500
Write two ways an ocean and a lake are different
Possible answer: An ocean is bigger than a lake. An ocean has salt water. Lake has fresh water.
500
Write a reason why people should recycle.
Possible answer: It helps protect the Earth
500
why do we need refuges?
refuges give animals and plants safe places to live
500
Name three ways people can help keep the land, water, and air clean
possible answer: pick up trash, clean up polluted waters, walk or ride bikes
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