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Yr 7 Sci Revision

Semester 2 Topics

TermDefinition
newtons Measurement of force
balanced forces Forces that are equal
gravity Force of a planet holding us down on the ground
contact forces Forces that are touching
friction The force that slows things down
spring balance Measures force
weight This is mass time Weight
spring tide Moon and sun on the same side of the earth
earths rotation Takes 24h for a full rotation
mass How much space we take up
probe sent away from earth and collects information, never comes back
telescope Helps us see far away planets
solar eclipse The moon blocks out the sun from the earths view
static electricity build up of charges on 2 different surfaces
bouyancy A force that acts in water and pushes objects upwards
heliocentric Sun in the center
geocentric Earth in the center
planet order Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune
cell wall structure found on the outside of all plant cells
microscope Helps us see really small things
Created by: hbugg.12