Water
Water takes up about _____ of Earth's surface.
70%
When water freezes, it becomes _____.
ice (less dense)
0* Celsius is the temperature that water ______
freezes
Hot water is ______ dense than cold water.
less
Order the water in density (most > least):
cold water, warm water, room temperature water.
Cold water, room temperature water, warm water
solid (ice) and gas (water vapor)
When liquid in a thermometer heats up it ______.
expands (goes up)
Can a pillow change in density?
Yes (if you compact/contract it)
Only about __ of Earth's water is Fresh & not frozen.
1%
Icebergs falling into the ocean are made up of _____ water.
fresh
100* Celsius is the temperature at which water ______.
boils
more
If I drop 12 pebbles into my fish's tank every day... eventually the water in the tank will ________.
Overflow because every pebble takes up a little space. Over time the pebbles will push the water out of the space because pebbles are more dense and sink to the bottom and the water will spill out.
I put a full can of soda in the freezer and the next morning the can was cracked open, why?
Because water expands when frozen and it had to get out somehow so it broke the can.
If the temperature of the air is 15* Celsius, but the ground temperature is -4* Celsius, what will likely happen to the rain as it hits the ground?
It will freeze (turn to ice)
Which is more dense: a rock or a pillow?
Rock
Because water expands and becomes less dense when frozen.
True or False: An iceberg will sink because it is very heavy.
False. It will float because ice is LESS DENSE than water.
When liquid in a thermometer cools it _______.
contracts (goes down)
Density is the amount of ______ in something.
material / stuff