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63 Cards in this Set
- Front
- Back
Force |
push or pull |
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Contact Force |
when one object pushes on another |
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Friction |
force that resists motion |
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Gravity |
force of attraction between objects |
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Water Wheel |
invention used to harness the power of water |
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Solid |
state of matter that has a definite shape |
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Liquid |
state of matter that has no definite shape but stays together |
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Gas |
State of matter with no definite shape and tends to diffuse |
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32 degrees |
Freezing and melting point |
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212 degrees |
boiling and condensation point |
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Repel |
like charges |
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Attracts |
opposite charges |
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Lodestones |
rocks early compasses where made of |
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Transfer of energy |
when one object gives some or all of its energy to another |
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Melting |
the temperature at which a solid becomes a liquid |
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Boiling |
the temperature at which a liquid becomes a gas |
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Freezing |
the temperature at which a liquid becomes a solid |
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Burning |
Combustion |
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Oxygen |
all fuels use in order to burn |
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Octane |
higher number give better performance |
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Propeller |
pulls the airplane through the air |
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Moray Eel |
fish that looks like a snake |
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Whale |
mammal that looks like a fish |
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Wandering Albatross |
largest flying bird |
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Stonefish |
most poisonous fish |
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Bivalve |
mollusk with two shells |
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Univale |
mollusk with one shell |
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Pinniped |
"wing-footed" |
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Shrimp |
small crustaceans: scavengers |
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Coral Polyps |
reefs are made from their skeletons |
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Engines |
devices that convert energy from a natural source to useful work |
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Potential |
Stored energy |
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Atomic Energy |
released from atoms when split or joined |
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Work |
the result of a force moving an object |
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Kinetic |
energy in motion |
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Steam |
water as a gas |
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Diffusion |
tendency to float away or spread out |
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Matter |
everything that takes up space and has weight |
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Mass |
amount of matter in an object |
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Electricity |
causes electrically charged items to attract or repel |
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Refraction |
bending of light |
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Reflection |
bouncing back of light |
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Luminous |
makes its own light |
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Transparent |
light passes through |
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Opaque |
light does NOT pass through |
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Translucent |
light is defused |
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Rodents |
largest group of mammals |
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Herbivores |
plant eater |
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Carnivores |
meat eaters |
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Nocturnal |
active at night |
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Migrating |
moving from place to place with the seasons |
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Nymph |
immature insect that looks like the adult |
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Camouflage |
blends in with its surrounding |
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Mimicry |
looks like another for protection |
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Silver |
best conductor of heat |
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Iron |
most useful metal |
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Mercury |
liquid at room temperature |
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Uranium |
source of nuclear power |
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Pumice |
Igneous rock |
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Limestone |
Sedimentary rock |
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Graphite |
found in pencils |
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Ruby |
rarest gemstone |
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Geode |
mudball |