Vocabulary Review
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
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position
the place where a person or thing is located
atmosphere
the layer of air that surrounds the Earth
minerals
a basic Earth material that makes up rocks
rocks
an Earth material made up of different minerals
soil
the loose minerals and natural material in which plants can grow on the surface of the Earth
water
a natural material made up of hydrogen and oxygen
deposition
the dropping of eroded soil and rock pieces in a new place
erosion
movement of Earth materials by water, wind, or ice
weathering
the process by which rocks are broken down into smaller pieces
climate
the average temperature and rainfall of an area over many years
seasons
periods of the year with different weather conditions
sound
waves caused by vibrations through a material which can be heard when they reach an ear
pitch
the highness or lowness of a sound
reflection
light bouncing off an object
opaque
not allowing light to pass through
translucent
allows some light to pass through(does not produce detailed images)
transparent
allows all light to pass through(objects can be seen clearly)
conductor
a substance that can allow electricity, heat, or sound to pass through it easily
insulator
a substance that does not allow electricity, heat, or sound to pass through it easily
electrical circuit
a complete path along which electricity moves (closed loop)
matter
something that takes up space
mixture
when two or more things are combined, but the things do not change(salad, trail mix)
physical properties
how something looks, smells, feels,(color, texture, odor)
pure substance
matter that cannot be separated into other kinds of matter by any physical process