Water Pollution | Take Care of Texas - Free Printable

The worksheet you uploaded is already filled out with student answers. Since your request is to "solve the problem accurately," I will review the questions and provide the correct, standard scientific answers for each section. This will help you check if the handwritten answers on the page are right or if they need correction.

Here is the step-by-step breakdown of the correct responses for the "Water Pollution" exploration.

Part 1: Prior Knowledge Questions

Question 1: *What household chemicals might be harmful if not disposed of properly?*
* Reasoning: Household items that contain strong chemicals can kill aquatic life or make water unsafe for humans if they go down the drain or into the soil.
* Correct Answer: Common examples include bleach, drain cleaners, paint, motor oil, pesticides (bug spray), and fertilizers.
* *Note on the image:* The student wrote "Bleach," which is correct. However, "plastic" is trash/pollution but not a chemical in the same way, and "fireworks" are less common household waste than cleaning supplies.

Question 2: *What are some other causes of water pollution?*
* Reasoning: Water pollution isn't just from chemicals; it comes from many human activities.
* Correct Answer: Major causes include industrial waste dumping, agricultural runoff (fertilizers/pesticides washing off farms), sewage leaks, oil spills, and littering.
* *Note on the image:* The student wrote "carbon foot print." While climate change affects water, "carbon footprint" is not a direct *cause* of water pollution in the same way as dumping waste. It’s better to list physical sources like farm runoff or factory waste.

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Part 2: Gizmo Warm-up

Question 1: *What is toxic pollution?*
* Reasoning: In the context of this simulation, "toxic" refers to substances that are poisonous to living things.
* Correct Answer: Toxic pollution is the release of chemicals or substances that are poisonous to humans, animals, and plants into the water.

Question 2: *What are some examples of toxic pollutants listed in the Gizmo?*
* Reasoning: The Gizmo simulation usually lists specific industrial or household toxins.
* Correct Answer: Typical examples found in this lesson include gasoline, oil, battery acid, mercury, lead, and pesticides.
* *Note on the image:* The student wrote "driving, farming, oil changes." These are *activities* that cause pollution, not the pollutants themselves. The question asks for the *substances*.

Question 3: *Can you think of other examples of toxic substances, not listed in the Gizmo?*
* Reasoning: Think about other dangerous liquids or solids used in industry or homes.
* Correct Answer: Other examples could include pharmaceuticals (medicines washed down toilets), radioactive waste, asbestos, or cleaning solvents.

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Final Answer

Here are the corrected answers for the worksheet:

Prior Knowledge Questions
1. Household chemicals: Bleach, drain cleaners, paint, motor oil, pesticides, and fertilizers.
2. Other causes: Industrial waste, agricultural runoff (from farms), sewage leaks, and oil spills.

Gizmo Warm-up
1. Toxic pollution definition: The contamination of water with poisonous chemicals that harm living organisms.
2. Examples from Gizmo: Gasoline, oil, mercury, lead, battery acid, and pesticides.
3. Other examples: Pharmaceuticals, radioactive waste, and industrial solvents.