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yr 7 sci revision

sem two topics

TermDefinition
newtons derived unit of force
Balanced forces two forces acting in opposite directions on an object
Gravity the force that attracts two bodies toward each other
Friction the resistance to motion of one object moving relative to another
spring balance spring balance is a type of mechanical force gauge
weight the weight of an object is related to the force acting on the object
mass both a property of a physical body and a measure of its resistance to acceleration
spring tide This tide usually adds only a couple of inches to normal tides.
earths rotation the rotation of Planet Earth around its own axis.
bouyancy a force that acts in water and pushes objects upward.
solar eclipse a portion of the Earth is engulfed in a shadow cast by the Moon
static electricity an imbalance of electric charges within or on the surface of a material.
heliocentric model the universe with the sun in the center
geocentric model the Universe with Earth at the center
planet order Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto
mitochondria double-membrane-bound organelle found in most Eukaryotic organisms
cell wall structural layer surrounding some types of cells
microscope an instrument used to see objects that are too small to be seen by the naked eye
probe sent away from earth to observe things
Created by: Jbelcher