Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
21 Cards in this Set
- Front
- Back
|
We would have no water on the Earth in 3000 years if it were not for the water cycle. The Earth's watercycle is very important because it controls ... A. the quality of the water B. the temperature range of the water C. the distribution of the water D. the amount of water |
ANSWER: C |
|
|
Potable or fresh water represents a very small amount of water on the Earth. The amount of fresh waterrepresent only about .... A. .003% B. .311% C. 1.31% D. 3% |
ANSWER: D |
|
|
During the Ice Ages, glaciers covered a large portion of the Earth's surface. In fact, at the height of theIce Age glaciers covered as much as ... A. 14% of the Earth's surface B. 21% of the Earth's surface C. 28% of the Earth's surface D. 35% of the Earth's surface |
ANSWER: C |
|
|
Freshwater that is potable and accessible is not fairly distributed throughout the Earth. The country that has the greatest amount of fresh water is ... A. Brazil B. Canada C. China D. United States |
ANSWER: A |
|
|
Glaciers are moving masses of snow and ice. A glacier that forms over an extensive area of relativelylevel land and flows outwards from its source is called an ... A. icefield B. iceberg C. ice flow D. ice cap |
ANSWER: D |
|
|
Glaciers shape the land when they move. Scientists know that two or more valley glaciers have erodeda mountain summit because they see the formation of a ... A. arête B. cirque C. horn D. striation |
ANSWER: D |
|
|
Land features and formations are evidence of Glacial movement (advancing or retreating). A windingridge of sand and gravel left behind by a retreating glacier is called ... A. a moraine B. a till C. an outwash D. an esker |
ANSWER: D |
|
|
Water quality is tested all the time. To determine the depth to which sunlight will penetrate the water, orclarity, investigator check for ... A. aquatic organisms B. bacteria count C. suspended matter D. aquatic vegetation |
ANSWER: C |
|
|
A raindrop landing in the extreme southeastern corner of Alberta will end up in ... A. Hudson's Bay B. Arctic Ocean C. Atlantic Ocean D. Gulf of Mexico |
ANSWER: D |
|
|
Traces of almost every chemical substance on Earth can be found in ocean water, with ocean watercontaining many different kinds of salts. Of the entire amount of ocean water on the surface of theEarth, sodium, chloride, magnesium, sulfur, calcium, potassium and others represent approximately ... A. 3.5% B. 6.67% C. 0.67% D. 0.35% |
ANSWER: A |
|
|
Waves move across the surface of the ocean and eventually hit the shore. When the crest eventuallyoutruns the trough, it topples forward onto the shore and is called a ... A. swell B. breaker C. tsunami D. longshore current |
ANSWER: B |
|
|
Water in irrigation canals can be contaminated by from run-off containing pesticides and fertilizers. Thistype of contamination is considered to be ... A. point sources B. non-point sources C. direct outflow D. groundwater |
ANSWER: B |
|
|
The system of water that flows through porous rock is called ... A. an aquifer B. a riverbed C. a water table D. groundwater |
ANSWER: C |
|
|
There are many different organisms living in the oceans. The greatest diversity can be found ... A. along the shoreline B. in the top 180 meters C. in the bottom of the ocean D. along the mid-ocean ridge |
ANSWER: B |
|
|
Whales are able to devour large amounts of plankton because they can filter them through thisadaptation ... A. gills B. blubber C. baleen D. barnacles |
ANSWER: C |
|
|
In the deep reaches of the ocean floor, certain bacteria can survive in this extreme environment andare able to make food and oxygen for other organisms through a process called ... A. photosynthesis B. chemosynthesis C. hydrosynthesis D. thermosynthesis |
ANSWER: B |
|
|
Compressed sheets of ice and snow cover about 10% of the Earth’s land area and lock up thismuch of the planet’s fresh water supply in the solid state... A. 50% B. 60% C. 75% D. 90% |
ANSWER: C |
|
|
The upstream areas of a watershed are called headwaters. It is here that the streams converge toform rivers. The endpoint of the water flowing through a watershed is called the ... A. source B. outflow C. estuary D. aquifer |
ANSWER: B |
|
|
Which of the following is the best definition of evaporation? a. It is the process of disappearing. b. It is a magical process of turning into vapor. c. It is the process of changing from liquid to vapor. d. It is the process of moving from one place to another. |
ANSWER: C |
|
|
Which of the following is the best example of precipitation? a. rain b. clouds c. evaporation d. ice |
ANSWER: A |
|
|
Explain what the water cycle is. |
The cycle of water from liquid to vapor tosolid is called the water cycle. The water cycle is an exciting andcontinuous process, with no beginning or end. The water cycle is themovement of water in the environment by evaporation, condensation,and precipitation. |
