What is it called when it doesn't rain for a long time?
drought
A small piece of gravel and a large sunflower seed weigh the same. Will they both sink?
No, the mass in a piece of rock is much more dense than the mass in a seed. They way the same, but they have different volumes.
When water is heated, does it expand or contract?
expand
True or False: A piece of rubber will float in water.
True. This was demonstrated in Mrs. Mariol's lesson screencast.
When water lands on waterproof surfaces, the water does what?
beads up
True or False: The average temperature of the human body is 32.6..
False. It is 98.6.
Which word means the amount of mass compared to the volume?
density
True or False: The particles in a frozen ice cube behave differently than the particles in any other frozen solid.
True. The particles of most frozen solids contract, or move closer. The particles in ice are unique. They separate and move further apart.
True or False: Water Striders are bugs that can walk on water.
True
Water is one of Earth's most precious _________ ______________.
natural resources
What is a measure of how hot matter is?
temperature
True or False: The average temperature of the human body is 32.6..
False
True or False: When something is heated, it contracts.
False. Particles move further apart when something is heated. They expand.
What is water's freezing point? (What temperature?)
32 degrees
Water always moves in the same direction. It always moves _________.
down
True or False: A coin will float in water.
False. It has more density than the water, so it is heavier.
What is a word that means "to soak up"?
absorb
Is a grassy field waterproof or absorbent?
absorbent
Rain falls from _______.
clouds
Almost three-quarters of planet Earth is covered by _______________.
water
If you take short showers instead of baths, this is one way to ____________ water.
conserve
What did Daniel G. Fahrenheit invent?
thermometer
What is water's boiling point? (What temperature, in Fahrenheit?)
212 degrees Fahrenheit
Is the upper playground at school waterproof or absorbent?
waterproof
What are the two scales used to measure temperature? Fahrenheit and....?
Celsius
Does surface tension make water particles attract or repel?
attract
If we were to take water from our fish tank and give it to our plants, then what are we doing to the water?
recycling
What causes water to flow downward?
gravity
Do we have more salt water or fresh water on planet Earth?
salt water
True or False: Only 3 percent of Earth's water is fresh water.
True
Streams are formed when snow __________ and flows down the sides of mountains.
melts
True or False: A block of wood will float in water.
True. It has less density than the water.
Does a drop of water with a larger dome fall quicker or slower than a drop of water with a smaller dome?
quicker
Is a material that sinks in water more or less dense than the water itself?
more
I have two marbles. One is wood. The other is steel. They are the same size. Will they both do the same thing when placed in a cup of water? Why or why not?
No. The wooden marble will float and the steel marble will sink. The wooden marble is less dense than the steel marble.
What do we call the top, rounded surface on a bead of water?
dome
What does it mean if something "expands"?
the molecules spread out
True or False: About half of all plants and animals need water to survive.
False - All need water!
Water can be in the form of liquid water, solid ice, or _________.
gas or water vapor
A raincoat does not allow water to soak in. We say that the raincoat is _________.
waterproof
Do molecules move faster or slower when they get hot?
faster
Which word describes what happens to water when it is heated?
melts
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