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1. Mass is
2. How is mass measured
1.Mass is the amount of Matter in an object.
2. measured in grams
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1. Weight is ?
2. Weight is measured in ?
1. Amount of gravity pulling down.
2. measured in pounds using scale.
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1. What is physical change?
2. Example
1. changes the appearance but does not create a new substance.
2 Mixing Kool-Aid
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1. Freezing point of water in Celsius.
2. Boiling point of water in Celsius.
1. 0
2. 100
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Name 5 physical changes
Melting, Evaporating, Condensing, Freezing, Subliming
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1. Electrical Energy
2. Two types of electrical energy
1. Created when electrons move.
2. Static electricity and curtent electricity
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cirucits
wires are connected to both - and +
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conductors
metal and water
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insulators
rubber, plastic, cloth, and wood
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sound energy
energy caused by vibrations
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1. light energy
2. what can light do?
1. energy created in electomagnetic straight waves.
2. Refract, reflect or transmit
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1. Refraction
2. reflection
3. transmit
1. Refraction- light bends, it causes rainbows, makes thing appear larger of smaller (eye glasses)
2. reflection- light bounces off a surface, Like a mirror
3. transmit- light goes through. like a window
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solar energy
energy created by the sun.
solar energy drives all syscles including water, nitrogen, carbon-oxygen, food chain
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weathering
breaking down substance
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erosion
Moving sediment to new location
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deposition
dropping off sediment in a new location
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nonrenewable resources
takes longer than an average persons lifetime
ex. petroleum, natural gas, oil, soil, minerals, rocks
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renewable resources
replace in an average persons lifetime
ex. plants, animals, soil, freshwater
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reusable resources
can be use over and over
ex. saltwater, air, and sun
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mountains and volcanoew are created when
plates move upward in earths crust.
volcanoes can also be created by hot spots
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glaciers often create what
valleys near oceans
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sun is a
star that creates heat and light by fusion
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earth revolves around the sun in
365.25 day or one year
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earth rotates on
axis in 24 hours or one day
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the seasons of earth are caused by
earth tilt as it revolves around the sun
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moon
rotates and revolves in alomst a month, since it does this at the same time we only see one side of the moon
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