Download Unit 7 Review

Unit 7 Review
Mr. Olsen
8th Grade Science
1.
Which event would most likely produce
igneous rocks?
a.
b.
c.
d.
deposition
earthquake
flood
volcano
2.
If you place your two fists together knuckle to knuckle and
force one up and one down, your fists remain motionless
until the forces become large enough to move. Then, your
fists move all at once, bumping and jiggling across each
other. As your fists slip and move, this most closely
models which of these natural events?
a.
b.
c.
d.
river
avalanche
glacier
earthquake
3.
Which of the following is NOT a feature
formed by glaciers during the last ice age?
a. sand dunes
b. moraines
c. cirques
d. U-shaped valleys
4.
What is the following: "Most fossils are found
in marine sediments"?
a. Theory
b. Law
c. Hypothesis
d. Fact
e. Superstition
5.
Why would fossils in newer formations be more likely to
resemble living species today than fossils from very old
formations?
a. The old formations are from galaxies far away that blew
up and became this earth.
b. The old formations were formed when conditions on
earth couldn’t support life.
c. The fossils in old formations are fakes assembled by
scientists from lots of different organisms to fool people.
d. The fossils in old formations are usually from extinct
species.
6.
Igneous rock was imbedded in sedimentary rock, which
also contained a fossil fish. The age of the igneous rock
was determined to be 350 million years. The igneous rock
was deposited there in molten condition.
How old is the fossil fish?
a. Less than 350 million years old
b. At least 350 million years old
c. Much older than 350 million years
d. Its age cannot be predicted from this data
7.
Which statement best summarizes the rock
cycle?
a. Rocks are all made of the same
materials.
b. Rocks can be different types at the same
time.
c. Rocks are unchangeable.
d. Rocks can change from one form to
another.
8.
Glaciers have been a dynamic force in
shaping the surface of the earth. What
physical features would you find in an area
that had been eroded by glaciers?
a. Dunes, worn rocks, loess
b. Landslides, mudflows, soil creep
c. Gullies, oxbow lakes, flood plains
d. U-shaped valleys, till, kettle lakes
e. Terraces, beaches, sandbars
9.
How does vegetation control water erosion
due to runoff?
a. They make the soil harder and more
resistant.
b. They stop the rain from reaching the soil.
c. They absorb the rain so it doesn't react
with the soil.
d. Their roots hold the soil in place.
e. Their stems grow high to avoid lower
runoff.
10.
What term describes the breakdown of rocks
into smaller and smaller parts?
a. Erosion
b. Deposition
c. Weathering
d. Cementation
11.
Minerals that break along smooth, flat
surfaces have
a. cleavage
b. hardness
c. fracture
d. metallic luster
12.
A rock has large, inter-grown crystals in thin
bands. Which type of rock would it be?
a.
b.
c.
d.
extrusive igneous
intrusive igneous
metamorphic
sedimentary
13.
What type of igneous rocks has individual
mineral crystals that are generally too small
to be seen without magnification?
a. chemical
b. clastic
c. extrusive
d. organic
14.
If you found an igneous rock with large
crystals, what would the crystals tell you
about how that rock was formed?
a. Cooled quickly above the surface.
b. Cooled quickly below the surface.
c. Cooled slowly above the surface.
d. Cooled slowly below the surface.
e. Cooled partially exposed.
15.
How are metamorphic rocks formed?
How are sedimentary rocks formed?
How are igneous rocks formed?