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Unit 4
Lesson 4-5
Created by
Science Teachers
Changes
Time
Forces
Agents
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What are constructive forces?
Build up of
land formations
1,2
What is erosion?
The carrying away of
materials from one
place to another
Row 1, Col 1
What are destructive forces?
Breakdown of
land formations
1,3
What is a landform?
A natural structure on
on the Earth’s surface
(ex. mountain, valley, plain, plateau…)
1,4
What is a canyon?
Deep valleys with
steep sides created
by rivers
2,1
What is a delta?
An area of land at the
mouth of a river where
deposits of eroded
materials have been
built up
2,2
What is a water cycle?
How water continuously
moves between the
ocean, the sky, and
the land
2,3
What is a mountain?
A landform with a steep
slope and a high peak
2,4
What is a beach?
An area where sand
meets the sea and/or
lake
3,1
What is a valley?
U and V shaped
low areas of land
3,2
What is a cliff?
High, steep, or
overhanging face of rock
3,3
What is weathering?
The breaking down
and wearing away of
rock material
3,4
What is a cave?
A hollow or natural
passage under the Earth
4,1
What is a volcano?
A mountain built up from
hardened lava and rock
that have erupted out
of the Earth
4,2
What is a plateau?
Flat land found far
above sea level
4,3
What is a glacier?
A large body of moving
ice
4,4
What is plate tectonics?
Continental drift;
Movement of the
Earth’s crust
5,1
What is magma?
Melted rock
5,2
What is a plain?
A wide area of flat land
5,3
What is wind?
Moving air
5,4