Water Quality and Filtration Concepts

The video explores water quality and distribution, starting with Izzy's confusion over water choices. Dr. Jeff explains the distribution of fresh and salt water on Earth, highlighting the scarcity of fresh water. A field trip to the Santa Monica Pier Aquarium reveals how human activities impact water quality. The video discusses surface runoff, agricultural pollution, and the importance of watersheds. It also covers water filtration processes, including a taste test challenge, and explains wastewater treatment. Finally, viewers learn to create a DIY water filtration system, emphasizing the need for clean water.

What percentage of Earth's water is fresh water?

• 3%

• 25%

• 50%

• 10%

Where is most of the Earth's salt water found?

• Glaciers

• Oceans

• Lakes

• Rivers

What is water quality a measurement of?

• The color of water

• The taste of water

• The biological, physical, and chemical characteristics of water

• The temperature of water

How can humans positively impact water quality?

• By increasing industrial waste

• By using more fertilizers

• By organizing beach cleanups

• By dumping chemicals into rivers

What is a watershed?

• An area of land that drains into a body of water

• A place where water is stored

• A type of pollution

• A type of water filter

What is the first stage in a home water filter?

• Fine mesh filtration

• Carbon absorption

• Sediment filtration

• Chemical treatment

What role do bacteria play in wastewater treatment?

• They change the water's color

• They increase the water's temperature

• They feed on leftover substances in the water

• They add nutrients to the water

What is the purpose of activated charcoal in a water filter?

• To add flavor to the water

• To absorb impurities and contaminants

• To cool the water

• To increase water pressure

What should you do before pouring muddy water into your homemade filter?

• Shake the bottle

• Loosen the lid

• Add more gravel

• Tighten the lid

What is a simple use for the water filtered by the homemade system?

• Bathing

• Cooking

• Watering houseplants

• Drinking