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Boost Review: The Hydrosphere
Test Description: 8.E.1: Understand the hydrosphere and the impact of humans on local systems and the effects of the hydrosphere on humans.
Instructions: Answer all questions to get your test result.
1) The main producers in the ocean are_______
A
Zooplankton and water
B
Zooplankton and small fish
C
Phytoplankton or Algae
D
Coral reefs and sponges
2) An area of land that drains into a stream, river, lake, or other body of water is called _____
A
An Aquifer
B
A river
C
An estuary
D
A watershed
3) What us pollution?
A
The release of harmful substances into the environment.
B
An increase in Earth's Temperature
C
A sudden growth of algae in a pond
D
A decrease of oxygen in a body of water
4) A body of water that has high turbidity is _______
A
Clear
B
Basic
C
Acidic
D
Cloudy
5) Which of the following water pH levels is the best for marine organisms?
A
7.8
B
3.5
C
12.0
D
1.0
6) What is a rock layer that collects and stores water?
A
Estuary
B
Spring
C
Watershed
D
Aquifer
7) An algal bloom in a water system is mostly likely caused by_________
A
Decreases in fish populations.
B
Increased use of fossil fuels.
C
Large amounts of nutrients(nitrogen/phosphorus) in runoff
D
High levels of oxygen in the water.
8) Which of the following is the main reason why the ocean is salty?
A
Salt dissolves from trash dumped into the ocean.
B
Salts are spilled by ships as they sail through the ocean.
C
Salts naturally form from water molecules in the ocean
D
Minerals and salts are dissolved by surface waters as they move over land into the ocean
9) Which of the following statements is correct about Earth's water?
A
About 50% of Earth's water is saltwater, and is found in oceans
B
Almost 97% of Earth's water is freshwater, and found in large lakes.
C
Only 1% of Earth's water is freshwater, and it is found in aquifers
D
Only 3% of Earth's water is freshwater, and it is mostly found in polar ice caps, snow, and glaciers.
10) An area where freshwater mixes with saltwater is called__________
A
an estuary
B
a river
C
the beach
D
a watershed
*select an answer for all questions
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