Water Unit Review

What is a small area of land that drains all water to a stream or wetland when the surface is saturated?

• river basin

• estuary

• watershed

• aquifer

Which body of water does not directly contribute water vapor into the atmosphere?

• aquifers

• oceans

• lakes

• rivers

Which of the following is NOT a source of fresh water?

• an estuary

• a lake

• an aquifer

• an ice cap

Groundwater supplies are stored in....

• watersheds

• river basins

• lakes and rivers

• aquifers

Which statement best compares the amount of water present on Earth today with the amount present years ago?

• There is slightly more water on Earth today.

• There is significantly less water on Earth today.

• There is significantly more water on Earth today.

• There is about the same amount of water on Earth today.

Which best explains why freshwater is in such short supply?

• Most is frozen in ice caps

• Most is trapped underground

• Most is cycling in the atmosphere

• Most is in the bodies of plants and animals

Which best describes the types of organisms found in estuaries?

• They can survive in salt water

• They cannot tolerate brackish water

• They can tolerate both salt and fresh water

• They are only found in freshwater

Which best describes the source of oxygen in the ocean water?

• oxygen is produced by marine plants in the process of making food

• oxygen is produced through marine animals exhaling

• oxygen is produced through precipitation falling in the ocean

• oxygen is produced by nodules on the ocean floor

Which of these contributes most to supporting life on the deep ocean floor?

• cold water temperatures

• lack of predators

• hydrothermal vents

• extreme water pressure

Oceanographers noted the absence of aquatic plants at great depths in the oceans. What factor mainly prevents the growth of plants in deeper parts of the ocean?

• high pressure

• absence of sunlight

• high salinity of water

• low water temperature