Question

multiple choice

1. ______ what percentage of earths surface is covered by water?

a. 29%
b. 50%
c. 71%
d. 97%

1. ______ what do scientists call all the water on earth?

a. geosphere
b. biosphere
c. atmosphere
d. hydrosphere

1. ______ what percentage of earths water is saltwater?

a. 3%
b. 29%
c. 71%
d. 97%

1. ______ where is most of earths saltwater found?

a. underground
b. in glaciers
c. in oceans and seas
d. in lakes and rivers

1. ______ what percentage of earths water is freshwater?

a. 3%
b. 29%
c. 71%
d. 97%

1. ______ where is a large portion of earths freshwater \locked away\ and hard to reach?

a. in rivers and streams
b. in clouds and water vapor
c. in glaciers and underground
d. in oceans and seas

1. ______ besides liquid water and solid ice, what is the third state of water mentioned in the passage?

a. plasma
b. gas
c. vapor
d. steam

1. ______ what is water vapor?

a. liquid water found in rivers
b. solid ice found in mountains
c. invisible particles of water floating in the air
d. saltwater in the ocean

Explanation:

1. Earth's surface water coverage is a well-documented geographic/environmental fact.
2. Scientific terminology for Earth's total water reservoir is defined in earth sciences.
3. Saltwater makes up the vast majority of Earth's total water supply.
4. Oceans and seas hold nearly all of Earth's saltwater.
5. Freshwater is a small fraction of Earth's total water, complementary to saltwater percentage.
6. Most inaccessible freshwater is stored in frozen and subsurface locations.
7. The three common states of water are solid, liquid, and gas (vapor).
8. Water vapor is the gaseous form of water, present in the atmosphere.

Answer:

1. C. 71%
2. D. Hydrosphere
3. D. 97%
4. C. In oceans and seas
5. A. 3%
6. C. In glaciers and underground
7. B. Gas
8. C. Invisible particles of water floating in the air