Hydrosphere Question Preview (ID: 37501)


This Is Review For NC 8th Grade Science Hydrosphere. TEACHERS: click here for quick copy question ID numbers.

Where is most of Earth's water located?
a) Oceans
b) Rivers
c) Glaciers
d) Lakes

An area of land where all of the water drains into a lake or river is called:
a) an ecosystem
b) a habitat
c) a wetland
d) a watershed

Most of the freshwater on Earth is located here:
a) under the ground
b) in polar ice caps and glaciers
c) in the oceans
d) in rivers, streams, and lakes

Which of the following is a characteristic of an estuary?
a) an area fed by several rivers
b) an area that many watersheds drain into
c) an area where freshwater mixes with salt water
d) an area that is protected by land on both sides

A layer of rock that collects and stores water is called
a) an aquifer
b) an estuary
c) a glacier
d) a hydrosphere

An example of nonpoint source pollution is:
a) chemicals being released from an industrial factory
b) oil leaking from a tanker
c) fertilizer runoff from a golf course
d) wastewater from a leaking pipe

An obvious example of point source pollution is:
a) trash floating in a lake
b) gas and oil from the roadways
c) runoff from farms
d) oil spilling from a tanker

What can high nitrate and phosphate levels lead to in a water system?
a) algal blooms
b) less algae
c) hotter water
d) healthier fish

Which of the following contains nitrates and phosphates?
a) radiation
b) pH
c) salts
d) fertilizers

What happens when bacteria decompose algae in an algal bloom?
a) decomposers at the surface remove oxygen from the air
b) decomposers add oxygen to the air
c) decomposers remove oxygen from the water
d) decomposers add oxygen to the water

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