1. Chapter 7, Lesson 1
Earth’s Changing Crust
fault
geologist
magma
lava
weathering
erosion
deposition
surveyor
elevation
seismograph
tension
compression
shear

2. fault – a crack in the Earth’s
crust

3. geologist – scientists who
study Earth

4. magma – hot, molten rock
beneath the earth’s surface

5. lava – magma that reaches
the earth’s surface

6. weathering – the breaking down
of the materials of the earth’s
crust
Click on this picture to explore
different types of weathering.

7. erosion – is the picking up and
carrying away of weathered
pieces of earth

8. deposition – the dropping of
bits of rock

9. surveyor – people who
measure the earth

10. elevation – the height of land
above sea level

11. seismograph – a device used to
measure vibrations of the Earth’s
crust

12. tension – stretches or pulls the
Earth’s crust apart

13. compression – squeezes or
pushed the Earth’s crust together

14. shear – twists, tears, or pushes one
part of the crust past another