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34 Cards in this Set
- Front
- Back
Newton's 3 laws of motion |
1st law: A body at rest remains at rest and a body in motion in motion until an outside force acts on it (inertia). 2nd law: A force causes an object to accelerate. equation---> f=mass x acceleration 3rd law: for every there is an equal & opposite reaction. |
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kinetic energy |
energy in motion. kinetic energy=1/2 mass(velosity)2 |
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potential energy |
stored energy; the ability of a system to do workdue to its position internal structure. gravitation potential energy=mass x gravity x height |
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The Law of conservation of energy |
energy cannot be created or destroyed only converted to another type of energy. |
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solar energy |
converts energy to chemical energy. |
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FRICTION |
the rubbing of one object or surface against another. |
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1.)Conduction 2.)Conduction 3.)Radiation |
transfer of heat through an object from a source tranfer of heat by liquid or gas. heat transfered by electromagnetic waves. |
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Gravity |
gravity will accelerate all objects at the same rate regardless of their mass. this is why a marble and a bowling ball when dropped from a building will hit the ground at the same time. |
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Physical properties |
all properties that can be determined without changing the identity of the substance, such a color,density,phase (liquid,solid,or gas),odor,boiling & freezing points and solubility. |
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chemical properties |
a characteristic that a substance display when it changes into a new substance. |
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physical change |
a change that does not create a new substance. |
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chemical change |
any change that produces a new substance. |
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freezing |
when a liquid becomes a solid.molecules become packed tighter together moving less. |
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melting |
occurs when a solid changes to a liquid allowing molecules to move more freely. |
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evaporating |
when a liquid becomes a gas.the molecules are now move ing very rapidly. |
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condensation sublimation precipitation |
when a gas becomes a liquid. when ice goes from a solid directly into a gas. during a water cycle,when clouds can no longer hold all the water from condensation,the cloud will release the water in the form of rainor snow. |
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density |
allows objects to float or sink d=m/v |
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atom |
smallest particals of a of element that has all the properties of that element. |
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element |
a pure substance that cannot be broken into simpler substances. |
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electrons neutrons protons |
negitive charge neutral charge positive charge |
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wave length amplitude frequency |
the length of one complete wavelength cycle. a measure of the energy a wave carries. the # of waves that pass a point in a given amount of time. |
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telescope spaceship satillites probes |
you can see things closer in outer space. allows astronauts to travel into space. are used to transmitt signals from space. are sent by scientist to collect data from far away planets. |
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solar eclipse lunar eclipse |
occurs when the moon is in front of the sun. occurs when the earth blocks our view of of the moon. |
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endothermic exothermic |
a reaction that absorbs heat from around them. a reaction the give off heat. |
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3 different types of galaxies |
1.) spiral 2.) eliptical 3.) irregular |
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fossils |
a piece or a trace of an organism that was once alive they are mainly found in sedimentary rocks. |
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Artic tundra Rainforest Desert |
temperatures are extremely cold year round. is a location a because lots of precipitation. is location b because it's copletly dry nothing but sand. |
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1-10 1 being softest 10 be hardest |
1.) talc 2.) gypsum 3.) calcite 4.) fluorite 5.) apatite 6.)feldspar 7.)quartz 8.)topaz 9.)corundum 10.)diamond |
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predator prey |
hunter hunted |
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herbivore |
an organism that feeds off of plants only. |
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carnivore |
an organism that feeds off of animals only. |
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omnivor |
an organism that feeds off both animals and plants.
ex. humans,raccoons |
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biotic factors |
are living organisms in the envirment. |
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abiotic factors |
are |