Show:
Labs
Water Cycle
Chemistry
Water Facts
Trickle Down Effect
100
What happens when you pour water into a container?
It takes the shape of the container
100
What form of energy starts the water cycle?
The sun
100
Draw a water molecule.
2 hydrogen atoms and one oxygen atom (think Micky Mouse ears)
100
How much of the earth is water?
75 %
100
List 4 items that are very absorbent--from our lab Suck it Up.
paper towels, towels, Shamwow, toilet paper, cotton balls.
200
Describe mineral oil in three ways?
transparent, oily or greasy, low viscosity, odorless
200
What part of the water cycle is oceans, lakes, streams, glaciers, and rivers?
collection
200
Water can be found in 3 states what are they?
solid, liquid, and gas
200
What enables an insect to walk on the surface of water?
Surface tension
200
What happened to the water in the jar in the classroom over the course of one month?
It evaporated.
300
What happens to the molecules in a high viscous liquid?
The molecules are moving against each other causing friction. This causes the liquid to move slowly.
300
What happens to water when it is warmed by the sun?
It turns into a gas called water vapour: evaporation
300
What causes water droplets to stick together?
cohesion
300
List one liquid that is less dense than water, and one liquid that is heavier than water.
Less dense: cooking oil Heavier: corn syrup
300
How much of the earth's water is fresh water?
3%
400
List four liquids with a low viscosity.
water, vinegar, rubbing alcohol, cooking oil, hydrogen peroxide.
400
List 4 types of precipitation
rain, hail, sleet, snow
400
When a substance dissolves in water the molecules have a ________________ attraction to water. What is this called? Give 2 examples of substances that dissolve in water.
Strong attraction: this is called a solution. Jello, salt, sugar, epsom salts.
400
When water goes from a liquid to a solid this is called_______________. What is happening to the water molecules when this happens (2 things)
It is called freezing. The molecules are slowing down and moving farther apart.
400
List 3 ways that water is important for living things.
for drinking (survival), for recreation, to put out fires, to irrigate crops
500
From our lab racing liquids, list four liquids with a high viscosity.
molasses, dish soap, corn syrup, ketchup
500
What happens when water vapour cools?
It condenses: it turns back into a liquid.
500
When substances have a weak attraction to water they are called ___________________. List 2 substances that have a weak attraction to water.
suspensions: cocoa, cornstarch, and coffee.
500
What happens to water molecules when water goes from a liquid to a gas? 2 things
The molecules speed up and move closer together.
500
List 4 ways you can conserve water.
use a water bottle instead of filling up a glass, keep cold water in a jug in the fridge, use the same towel all week, have a shorter shower, have a bath with your brother or sister, use grey water to water plants, don't water your lawn when it is really hot or windy.