Q3: Water District Test Review

Saltwater & Freshwater

100

This is the name of the water shed Fairfax County is a part of

What is the Chesapeake Bay Watershed

200

The percentage Earth’s saltwater?

97%

300

The percentage of all freshwater on Earth.

What is 3%?

400

The percentage of fresh LIQUID water.

What is 1%?

500

Why is most of the freshwater on Earth unavailable? 

It is in glaciers

Water Cycle

100

The process of liquid water turning into a gas is called this.

Evaporation or Condensation? 

What is evaporation?

200

These are the FOUR types of precipitation. Name two.

What are rain, snow, sleet, and hail?

300

Give an example of condensation

dew on the grass

water droplets on a cold glass

foggy mirror

400

This is the process when PLANTS give off water vapor into the air.

What is transpiration?

500

Give an example of evaporation

boiling water disappearing

a spill drying up 

a wet bathing suit drying in the sun

etc

Conservation

100

This means to "SAVE" water.

What is conserve?

200

Trash on the ground, chemicals in the water, and dirty air are all examples of this.

Pollution or chemicals? 

What is pollution?

300

This is one way to protect the water shed

wash cars at the car wash

don't liter

pick up yard waste

400

This is one way to conserve water indoors.

dont run water when brushing teeth

flush less

use unfinished drinking water for plants

etc.

500

What are 3 ways humans impact water on Earth? 

pollute it 

use it up

try to conserve it/protect it

PERIODIC TABLE

100

What is an element? 

Made up of 1 type of atom.

200

Name 3 common elements on Earth.

Hydrogen

Oxygen

Carbon

Nitrogen

300

The atomic number tells you... 

The number of protons (and electrons in a stable atom)

400

What makes all the elements different? 

The number of protons

500

ClH₂CO₂ 

_{How many elements?}

_{How many atoms?} 

_{Compound or molecules?} 

4

6

compound

ATOMS

100

the negative particle

electron

200

the particles that make up the nucleus

protons and neutrons

300

Atomic Mass =   ____________ + _____________

protons + neutrons

400

Electrons have a _________ charge and are located_______________

negative

outside

500

An element with an atomic number of 4 and an atomic mass of 7.  How many protons, neutrons, electrons? 

Draw and label the atom.

P-4

N-3

E-4