Transcript Happy Lesson

Happy Lesson
The Earth’s Crust
Adapted from:
http://www.quia.com/tq/284995.html
Grades 5-7
1. We live on the earth's crust,
which is a thin layer of ___on the
Earth's surface.
• rock (correct answer)
• soil
• water
2. The solid rocky outer layer of the
Earth, consisting of the crust and
the outer part of the mantle,
____form(s) a continuous
unbroken covering around the
Earth.
• does
• does not (correct answer)
3. This rocky layer is divided into
sections called ___.
• plates (correct answer)
• continents
• oceans
4. These _____move around or
"float" on top of the gooey
molten rock that makes up the
softer mantle.
• plates (correct answer)
• pieces
• sections
5. What happens when these plates
move?
• [A] They can collide. (correct
answer)
• [B] They can move apart.
(correct answer)
• [C] They can slide past each
other. (correct answer)
• [D] They can combine to form
one plate
6. As the plates move apart,
magma(molten rock) oozes up
and forms new crust in the form
of a _____along the ocean floor.
One such ridge can be found
along the middle of the Atlantc
Ocean.
• ridge (correct answer)
• trench
7. Volcanoes and oceanic trenches
partly encircling the Pacific Basin
form the so-called , a zone of
frequent earthquakes and
volcanic eruptions.
• Ring of Fire (correct answer)
• Circle of Life
8. When two continents meet headon, neither is subducted. Instead,
the crust tends to buckle and be
pushed upward or sideways.
Some of the world's tallest
mountains are a result of
• continental-continental
convergence (correct answer)
• oceanic-oceanic convergence
9. New crust is formed as the plates
pull away from each other. This
describes _____.
• divergent boundaries
(correct answer)
• convergent boundaries
• transform boundaries (slidiing
boundaries)