FLVS 03.00 Fresh Water Pretest

The pictures below show four Earth features. Which of these features are formed by underground reactions between acid in groundwater and limestone?

1 and 2

The pictures below show a hot spring and a geyser.

Both are formed when the groundwater gets heated.

One student suggests using a front-loading washing machine instead of a top-loading washing machine to conserve water. Which of these statements best describes the suggestion made by the student?

It is practical because a top-loading machine uses much more water than a front-loading machine.

One group of students uses different methods to conserve water in the garden as listed below. Method 1: Water the garden when the sun is out. Method 2: Water the garden when the weather is cool. Method 3: Water the garden when it is not windy. Method 4: Water the garden in the afternoon. Which of these methods would conserve the most water?

Method 2 and Method 3

"Taking a short shower instead of a bath saves about 40 gallons of water." Who is the most reliable source of this information?

a scientist

One student designed an experiment with clay and sugar cubes. The steps of the experiment are shown below. 1. Take twelve sugar cubes and six ounces of clay. 2. Mold the clay over the sugar cubes so that only a small portion of the sugar cubes are exposed to air. 3. Leave the mold to dry for several days. 4. When the mold becomes hard, dip it in a beaker of water. 5. Observe the sugar cubes dissolve in water. The student's experiment demonstrates the formation of

caves

Sinkholes are formed by the actions of

groundwater

Students should record information on groundwater only from sources which are

reliable

A magazine published an article stating that drinking water obtained from waste water is harmful for health. Why is this information most likely to be incorrect?

scientific tests show that drinking water obtained from waste water is pure and safe

The diagram below shows the movement of matter in a portion of the water cycle. What does P most likely represent?

springs

One student did an experiment with sand, gravel and water. The steps of the experiment are shown below. 1. Put layers of sand and gravel in a beaker. 2. Pour water slowly into the beaker. 3. Observe the water fill the spaces between the particles of sand and gravel. 4. Continue to pour water into the beaker until the water rises above the layer of sand and gravel. What does the student's experiment most likely demonstrate?

the movement of recharge through the layers under the Earth

A location gets its drinking water from wells drilled into the Earth. The people in the location have reported that their drinking water has a foul smell since a few days. A student investigates the cause of the foul smell in the drinking water and concludes that a gasoline spill about a year ago has caused the contamination in groundwater. Why is the student's conclusion most likely invalid

there is a large time gap between the gasoline spill and contamination of water