Predict the safety and potability of water supplies in North Carolina based on physical and biological factors, including:
• Temperature
• Dissolved oxygen
• pH
• Nitrates and phosphates
• Turbidity
• Bio-indicator
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Q 1/18
Score 0
Which statement correctly describes the structure of the hydrosphere?
30
The hydrosphere includes all water on earth, most of which is in the oceans, with a small percentage available as freshwater in rivers, lakes, and ground water.
The hydrosphere includes only the water found in oceans and seas.
The hydrosphere includes all water on earth, most of which is in rivers and lakes, with a small percentage in the oceans.
The hydrosphere includes all the water in the sky and none on the ground.
Q 2/18
Score 0
What is a local river basin and how does it affect water availability?
30
A local river basin is the area of land that drains to a particular river and it affects water availability by collecting, storing, and distributing rainfall.
A local river basin is the area of land that repels water and it affects water availability by preventing water from accumulating
A local river basin is an underwater reservoir and it affects water availability by controlling the amount of water evaporation
A local river basin is a large body of water surrounded by land and it affects water availability by serving as a storage site for rainwater
18 questions
Q.
Which statement correctly describes the structure of the hydrosphere?
1
30 sec
8.E1.1
Q.
What is a local river basin and how does it affect water availability?
2
30 sec
8.E1.1
Q.
What percentage of Earth's water is readily available as freshwater in rivers, lakes, and groundwater?
3
30 sec
8.E1.1
Q.
How does the structure of the hydrosphere affect local river basin and water availability?
4
30 sec
8.E1.1
Q.
What percentage of Earth's water is found in the oceans?
5
30 sec
8.E1.1
Q.
How does a river basin contribute to the distribution of water in the hydrosphere?
6
30 sec
8.E1.1
Q.
How much of Earth's total water supply is available as freshwater in lakes?
7
30 sec
8.E1.1
Q.
Which of the following is not a part of the hydrosphere?
8
30 sec
8.E1.1
Q.
What impacts does the hydrosphere have on the local river basin and water availability?
9
30 sec
8.E1.1
Q.
Which of the following best describes the relationship between the hydrosphere and a local river basin?
10
30 sec
8.E1.1
Q.
High levels of nitrates and phosphates in North Carolina's water supply could potentially indicate what condition?
11
30 sec
8.E1.3
Q.
Why might high levels of dissolved oxygen in North Carolina's water supply indicate safer, more potable water?
12
30 sec
8.E1.3
Q.
In terms of water safety and potability in North Carolina, which biological factor's presence usually indicates a healthier, more potable condition?
13
30 sec
8.E1.3
Q.
What could be the implication if the pH level of North Carolina's water supply is found significantly lower than 7?
14
30 sec
8.E1.3
Q.
Why is turbidity an important factor to consider while predicting the safety and potability of water supplies in North Carolina?
15
30 sec
8.E1.3
Q.
Bio-indicators in water supplies of North Carolina such as aquatic insect larva suggest what about the water?
16
30 sec
8.E1.3
Q.
What can potentially reduce the dissolved oxygen level in North Carolina's water supplies, negatively impacting the potability?
17
30 sec
8.E1.3
Q.
In the context of water safety in North Carolina, which physical or biological factor would not necessarily indicate a lower level of potability?
