Science 8 Unit E Review Slides

Science 8 Unit E Review Slides

Multiple Choice

It is safe to say that most of the water on earth is

• composed up of freshwater

• found in lakes and rivers

• has a low salinity concentration

• composed of saltwater

Multiple Select

Select all the proper ways to test for water quality:

• Salinity: Salt concentration

• Bacteria: E.Coli, listeria

• Taste and odor

• pH: Does it have a neutral pH?

• Turbidity: Cloudiness

Multiple Choice

True or False: Distillation is the process where water is turned into vapour, leaving dissolved particles behind.

• True

• False

Multiple Choice

The sediments from a boulder are floating down a river. This process is called

• deposition

• weathering

• erosion

• turbidity

Multiple Choice

The main difference between waves and tides, is that

• waves are caused by the gravitational pull from the moon

• waves are a change in the water level of a body of water

• tides are caused by wind

• waves are caused by wind

Multiple Choice

The most important thing to remember about a watershed is that

• watersheds only exist near oceans

• water flows from the highest point of the region, into rivers, streams, lakes and oceans

• the continental divide is the lowest point in a watershed

• all of the previous statements are correct

Multiple Choice

True or False: Glaciers are not the real reason as to why we have continental shelves, eskers, moraines, kettles etc.

• True

• False

Multiple Choice

Currents play an important role in our climate because

• the different temperature of the moving current water affects the temperature of the air

• currents only carry warm water within them

• currents only carry cold water within them

Multiple Choice

The area of the ocean where plants and animals are able to survive the harsh movements of water (i.e. waves and tides) is called

• the estuary zone

• the upper zone

• the oceanic zone

• the intertidal zone

Multiple Select

Choose all of the aquatic animal adaptations:

• Turbidity

• Temperature

• Pressure

• Salinity

• Light

Multiple Choice

Animal species have what's called a "range of tolerance". This is important to consider when analyzing the water quality because

• seasonal changes are too harsh to survive

• animals have no way of adapting to their environment

• pollution can impact the oxygen levels in the water

• all of the previous statements are correct.