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The Earth System
Test Description: Review of Earth Systems and Interactions and The Geosphere
Instructions: Answer all questions to get your test result.
1) Which two systems interact when a river causes erosion?
A
the hydrosphere and the geosphere
B
the biosphere and the atmosphere
C
the hydrosphere and the biosphere
D
the biosphere and the geosphere
2) Phosphorus does not exist in which system?
A
hydrosphere
B
atmosphere
C
geosphere
D
biosphere
3) Which of the following describes carbon dioxide in the atmosphere?
A
greenhouse gas
B
dissolved phosphate
C
fossil fuel
D
industrial runoff
4) Which term describes the way a mineral's surface reflects light?
A
luster
B
streak
C
fracture
D
cleavage
5) Which horizon of a soil profile contains the highest amount of organic material?
A
D horizon
B
C horizon
C
B horizon
D
A horizon
6) Which statement describes continental crust?
A
rich in the dense minerals iron and magnesium
B
made up of igneous rocks only
C
containing very little oxygen
D
less dense than oceanic crust
7) A biosphere is the part of Earth that supports ______.
A
life
B
minerals
C
water
D
air
8) The air that surrounds Earth is called ________.
A
the atmosphere
B
the hydrosphere
C
the biosphere
D
the geosphere
9) Water returns to the atmosphere by the process of _______.
A
precipitation
B
condensation
C
evaporation
D
radiation
10) Surface processes that work to break down rock are called _____.
A
subduction
B
compaction
C
cementation
D
weathering
11) One possible result of extra carbon dioxide in the atmosphere is _________.
A
a rise in average temperatures on Earth
B
a decrease in the amount of water on Earth
C
an increase in the number of carnivores on Earth
D
a decrease in the amount of nitrogen in the soil
12) All minerals are ______.
A
unordered
B
naturally occurring
C
organic solids
D
made in a lab
13) How are igneous rocks formed?
A
They are hot magma the moment it is expelled from a volcano.
B
They are formed from cooled magma.
C
They are formed from sediments that collected in ocean beds.
D
They are formed over many years of pressure and heat within Earth.
14) A rock is a(n) _________.
A
atom
B
element
C
mixture
D
compound
15) How do chemical and physical weathering differ?
A
Physical weathering - rocks are broken by physical processes. Chemical weathering - chemical reactions dissolve minerals
B
Chemical weathering can occur with the help of water reacting with carbon dioxide. Mechanical weathering - no water involved.
C
Mechanical and chemical weathering can happen with the help of plants and animals.
D
Physical weathering happens in the Earth's crust, and chemical weathering happens in the mantle.
16) In which horizon of a soil profile is the parent material?
A
D horizon
B
A horizon
C
C horizon
D
B horizon
17) The _______ is the Earth's thinnest layer.
A
inner core
B
outer core
C
crust
D
mantle
18) The warmest place within Earth is the ________.
A
mantle
B
outer core
C
crust
D
inner core
19) When algae from an algal bloom die, they are broken down by bacteria that use up much of the ___________ in the water.
A
food
B
oxygen
C
carbon dioxide
D
chemical pesticides
20) The rock cycle suggests that _______.
A
rocks are continually recycled into different forms
B
rocks always stay in the same form
C
rocks are always being added to Earth's mass
D
rocks disappear from Earth as they go underground
*select an answer for all questions
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