What is Earth's Hydrosphere?

layer of water covering the crust

What properties help us identify a mineral?

hardness and streak of the mineral

How do you find hardness of a mineral?

scratch it against a penny, glass plate and nail

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Earth Science #2

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7th and 8th grade rocks, minerals and plate tectonics.

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Questions 20

Answers

1
What plate do we live on?
South American
North American
Juan de Fuca
Pacific
2
What is Earth's Hydrosphere?
layer of rock above the mantle
hot liquid rock near the outer core
layer of water covering the crust
all of the air surrounding Earth
3
Where are the oldest fossils found in the rock layers?
in the middle
at the top
at the bottom
sometimes at the top, other times at the bottom
4
How are rocks grouped into sedimentary, igneous and metamorphic?
how long they took to form
which ones have fossils
in what method they formed
when they formed
5
What type of rock forms when lava hardens?
sandstone
metamorphic
igneous
sedimentary
6
What properties help us identify a mineral?
hardness and streak of the mineral
color and size of the mineral
shape and texture of the mineral
location, mass, and odor
7
What type of rock forms from magma?
sandstone
igneous
sedimentary
metamorphic
8
How do sediments form?
weathering and erosion
heat and pressure
lava cooling
compacting and cementing
9
What type of rocks contain fossils?
obsidian
metamorphic
sedimentary
igneous
10
What evidence do we have that Pangaea existed?
Similar fossils in South America and Africa
All of the above are correct
Rock layers that match up on 2 continents
Continents looks like a jig-saw puzzle
11
What are rocks composed of?
fossils
metals
cells
minerals
12
What happens at plate boundaries?
tsunamis, hurricanes, and droughts
mountains, blizzards, and floods
blizzards, hurricanes, tornadoes
earthquakes and volcanoes
13
When you rub a mineral against a ceramic tile, you are finding ___.
streak
luster
hardness
cleavage
14
What mineral is the hardest mineral? 10 on the Moh's hardness scale
graphite
talc
quartz
diamond
15
What is the name of the giant landmass when all of the continents were joined together?
Eurasia
Gondwanaland
Earthia
Pangaea
16
What substance covers over 75% of the Earth's surface?
water
liquid rock
solid rock
ice
17
What causes mountains to form?
Plates pulling apart
Plates colliding
Plates sliding past each other
Plates sinking
18
How do you find hardness of a mineral?
check to see how the mineral breaks
look to see if it is metallic or not
scratch it against a penny, glass plate and nail
rub it against a ceramic tile
19
What type of rock forms from extreme heat and pressure?
Metamorphic
Igneous
Sedimentary
20
Where are the convection currents that move tectonic plates found?
mantle
crust
inner core
outer core

Earth Science #2 Flashcards | StudBud