Water Help Slides

Multiple Choice

$$\degree$$  Which best describes the water cycle?

• water circulates between the earth's oceans, atmosphere, and land

• water precipitates from the atmosphere to the ocean

• water evaporates from the land to the atmosphere

• water freezes at 0 degrees Celsius

Multiple Choice

Water from an aquifer is...

• CLEAN, because the permeable layers above the aquifer filter out pollutants.

• UNCLEAN, because all surface pollutants trickle down into the aquifer.

Multiple Choice

Which lists the Earth's fresh water locations in order from the MOST water to the LEAST water?

• ice, groundwater, lakes & rivers

• groundwater, ice, lakes & rivers

• lakes & rivers, ice, groundwater

• ice, lakes & rivers, groundwater

Multiple Choice

Why is the water cycle important for life on Earth?

• It helps regulate temperature and climate, supports plant and animal life, and recycles water resources.

• It only provides water for oceans.

• It only affects weather patterns.

• It is responsible for creating saltwater.

Multiple Choice

A _________ is a smaller stream/river that contributes to the main river a drainage basin.

• Tributary

• Mouth

• Watershed

• Source

Multiple Choice

Why is MOST of the freshwater on Earth not available for our use?

• All freshwater on Earth is easily accessible for use.
• It is frozen in the icecaps and glaciers.
• It is surface water.
• It is underground.

Multiple Choice

What is an aquifer?

• A water pump

• An Impermeable layer

• A place underground that stores water

Multiple Choice

What type of Aquifers are A and B?

• Both are Confined Aquifers

• Aquifer A is a Confined Aquifer and Aquifer B is a Unconfined Aquifer

• Aquifer A is a Unconfined Aquifer and Aquifer B is a Confined Aquifer

• Both are Unconfined Aquifers

Multiple Choice

Which could cause a well to stop working?

• a falling water table due to decreased precipitation

• a falling water table due to increased precipitation

• a rising water table due to increased precipitation

• a rising water table due to decreased precipitation

Multiple Choice

Because estuaries get nutrients from both a river and the ocean...

• they have large and biodiverse populations of organisms

• they have very salty water

• they provide few habitats

• they are polluted

Multiple Choice

Which characteristic of an estuary makes it a good nursery area for marine organisms?

• It has many areas to hide from predators.

• It has the ability to absorb water and prevent flooding.

• It is located at the mouth of a river.

• It has a lower salinity than the ocean.

Multiple Choice

Why is there usually a lot of mud in some parts of the estuary?

• River carries particles of sand & dirt, which settle to the ground and become mud when water goes down.

• Pollution has caused all of the plants to die, leaving mud.

• The plants lived in the wrong part of the estuary and then died.

Multiple Choice

The land area that supplies water to a river system is called a

• water table

• estuary

• watershed

• wetland

Multiple Choice

When salt and fresh water mix, what is the new water substance called?

• surface water

• fresh water

• salt water

• brackish water

Multiple Choice

Which is another term for watershed?

• river basin

• aquifer

• groundwater

• intertidal zone

Multiple Select

Where does the water in a watershed originate?

• precipitation

• the melting of snow and ice

• surface runoff

• the ocean

Multiple Choice

This Image represents...

• Downwelling

• Upwelling

• Thermohaline circulation

• Rip Current

Multiple Choice

Temperature and salinity differences in ocean water cause:

• Mid-ocean ridges

• Deep Currents

• Surface Currents

• High tide and low tide

Multiple Choice

What do ocean currents move around the world?

• Gases
• Nutrients
• Heat Energy
• All of these

Multiple Choice

Briefly describe the overall relationship between temperature and density.

• Lower temperature water has higher density, warmer water has lower density
• Lower temperature water has lower density, warmer water has higher density

Multiple Choice

Why is the photic zone such a productive ecosystem?

• plants in shallow water(the photic zone) are able to get enough sunlight to produce oxygen and other nutrients

• the photic zone is warm which helps get carbon

• hydrothermal vents in the photic zone produce a lot of nutrients

Explanation Slide...

Upwelling is crucial because it brings nutrient-rich water from the ocean depths to the surface, supporting diverse marine life and ecosystems. This process enhances productivity in oceanic regions, making it vital for sustaining life.

Multiple Choice

Why is upwelling important?

• Upwelling regulates ocean temperature

• Upwelling provides nutrient rich water that sustains life

• Upwelling controls the tides

• Upwelling helps sailors to navigate the seas

Explanation Slide...

Temperature and salinity are key factors that influence ocean density. Variations in these properties lead to differences in water density, driving ocean currents and affecting global circulation patterns.

Multiple Choice

________ and _______ affect the ocean's density and cause ocean currents to flow.

• gravity and the Coriolis Effect

• temperature and salinity

• wind and climate

• temperature and the Coriolis Effect

Explanation Slide...

Cold and salty water is denser than warm and fresh water, causing it to sink faster. The combination of low temperature and high salinity increases density, making 'cold and salty' the correct choice.

Multiple Choice

Which of the following types of water would SINK the fastest?

• warm and salty

• cold and salty

• warm and fresh

• cold and fresh

Explanation Slide...

The correct choice highlights that sunlight in shallow ocean areas promotes photosynthesis, which produces oxygen. This process leads to high oxygen levels, making it essential for marine life.

Multiple Choice

What does this diagram illustrate about oxygen in the shallow parts of the ocean?

• There's low oxygen in the shallow ocean because fish eat the plants.

• There's low oxygen in the shallow ocean because there's no sun for photosynthesis.

• There's high oxygen in the shallow ocean because of sunlight and photosynthesis.

• There's high oxygen in the shallow ocean because fish release oxygen during cellular respiration.

Explanation Slide...

Photosynthesis requires sunlight, which is only available in the photic zone. In the aphotic zone, there is no light, making it impossible for ocean plants to perform photosynthesis.

Multiple Choice

Why is photosynthesis limited in the APHOTIC zone?

• Ocean plants need sunlight to photosynthesize, and sunlight is in the PHOTIC zone.

• Ocean plants are able to photosynthesize without sunlight in the APHOTIC zone.

• Ocean plants cannot survive in the deep ocean because of the cold temperatures.

Explanation Slide...

Upwellings rise to the ocean's surface when wind blows the surface layers of water away from the shore. This movement allows deeper, nutrient-rich water to replace the displaced surface water, facilitating the upwelling process.

Multiple Choice

According to the image, how are upwellings able to rise to the ocean's surface?

• wind blows the surface layers of the ocean away from the shore, which allows the upwellings to rise

• wind blows the surface layers of the ocean towards the shore, which allows upwellings to rise

Multiple Select

Which of the following factors can influence ocean currents?

• Temperature

• Salinity

• Wind

• All of the above

Multiple Choice

A measure of warm or cold a body of water is. Cool water is better for organisms.

• temperature

• dissolved oxygen

• turbidity

• nitrates & phosphates

• bioindicators

Multiple Choice

A measure of how cloudy the water is. Water that is healthy for organisms is generally clear.

• pH

• dissolved oxygen

• turbidity

• nitrates & phosphates

• bioindicators

Multiple Choice

A measure of the amount of oxygen in the water that is available for organisms to use. Healthy water has a lot of this!

• pH

• dissolved oxygen

• turbidity

• nitrates & phosphates

• bioindicators

Multiple Choice

A measure of how acidic or basic the water is. Healthy water has a range between 6.5 and 8.5.

• pH

• salinity

• turbidity

• nitrates & phosphates

• bioindicators

Multiple Choice

An overload of nutrients can cause overgrowth of algae and other problems in a lake or pond.

• pH

• salinity

• turbidity

• nitrates & phosphates

• bioindicators

Multiple Choice

The presence or absence of certain macroinvertebrates can give you an idea of the health of a water system.

• pH

• salinity

• turbidity

• nitrates & phosphates

• bioindicators

Multiple Choice

What is an example of point source pollution?

• Chemical runoff from roads

• Beach trash that gets into the water

• Sewage pipes draining into bodies of water

• Fertilizer from lawns seeping into groundwater

Multiple Choice

Which is an example of nonpoint source pollution?

• Oily runoff from from several nearby towns into a lake

• Polluted drainage water from a factory

• Oil that spills from a tanker

• Gasoline dumped from a boat

Multiple Choice

The _________ monitors the water supply in the United States.

• Pollution Prevention Agency

• Environmental Pollution Agency

• Environmental Protection Agency

Multiple Choice

What are the sources of nitrates in drinking water?

• Septic tank leaks, Human and animal waste, Cleaning and industrial waste

• Septic tank leaks, Laundry, Cleaning and industrial waste

• Runoff contaminated with fertilizers, Sewage, Human and animal waste

• Runoff contaminated with fertilizers, Sewage, Laundry

Multiple Choice

What is the measure of salt in water known as?

• Salinity

• Dissolved oxygen

• pH level

• Turbidity

Multiple Choice

Potable water is water that is ______________.

• polluted

• safe to drink

• biological

Multiple Choice

Water with high turbidity 

• is cloudy and hard to see through
• is clear

Multiple Choice

pH greater than 7 is considered to be

• neutral.

• basic.

• acidic.

• polluted.

Multiple Choice

pH value of less than 7 is considered to be

• polluted.

• basic.

• like drain cleaner.

• acidic.