Lessons 9-12

Question 1

To kill harmful bacteria, viruses and other organisms

Answer 1

Disinfect

Question 2

Septic System

Answer 2

Usually a tank
Underground
Holds wastewater

Question 3

A place
The community water supply system
Uses to
Store water
Before sending to homes or businesses

Answer 3

Reservoir

Question 4

Wastewater

Answer 4

Water that has been used and needs to be cleaned

Question 5

A place
Where wastewater is
Filtered and Cleaned
Before going back into the
Water Cycle

Answer 5

Wastewater treatment plant

Question 6

Water treatment plant

Answer 6

A place
Where fresh water is
Filtered and cleaned
Before going back into the
Water Cycle

Question 7

Well

Answer 7

A hole dug in the ground so that
groundwater can be
Pumped out of an
Aquifer

Question 8

True or False:

We do not need to develop ways to access and clean water before we use it.

Answer 8

False

Question 9

True or false

Water is a natural resource that is essential for humans and other organisms

Answer 9

True

Question 10

True or false

People in Doylestown use more water than they need

Answer 10

True

Question 11

Need

Answer 11

Something an organism must have in order to stay alive

Question 12

Want

Answer 12

Something an organism would like to have, but can survive without

Question 13

True or false

Fresh milk is a need

Answer 13

False

Question 14

Do people in the world still have to hand carry water from its source to their homes?

Answer 14

Yes, about 1/6 th of the population

Question 15

To use something carefully so it is not wasted

Answer 15

Conserve

Question 16

Estimate

Answer 16

a best guess

Question 17

Flow rate

Answer 17

How fast or how slow water comes out of a faucet

Question 18

The _________ of a set of numbers is the typical or middle value.

Answer 18

mean

Question 19

A number that represents the amount of something

Answer 19

Value

Question 20

True or false:

Unlimited amounts of water are freely available to all people on earth

Answer 20

False

Question 21

Contaminate

Answer 21

To make dirty or unclean

Question 22

Herbicide

Answer 22

A chemical used to kill unwanted plants

Question 23

Pesticide

Answer 23

A chemical used to kill unwanted pests, usually insects

Question 24

Something that contaminates air soil, or water

Answer 24

Pollutant

Question 25

A harmful change in the natural environment due to human activities

Answer 25

Pollution

Question 26

Water pollution

Answer 26

The addition of
Harmful substances
that cause water to become
unhealthy