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yr7 science revision

Questiondefinitions
newtons unit of force.
balanced forces to forces acting in opposite directions.
gravity Gravity is what keeps us on the Earth.
contact forces forces that are touching.
friction friction is when you rub two things together.
spring balance Measures forces.
weight Weight is affected by gravity.
spring tide moon and sun on the same side of the Earth
Earths rotation It takes 24h for a full rotation
probe when something is sent out from Earth to find information.
telescope Sent out from
solar eclipse when the moon is between the sun and Earth.
lunar eclipse When the Earth is between the sun and moon.
static electricity the build up of negative and positive charges on different surfaces.
heliocentric model When the sun is in the middle.
geocentric model geocentric is when the Earth is in the middle
planet order Mercury,Venus,Earth,Mars,Jupiter,Saturn,Uranus,Neptune,Pluto
mitochondria mitochondria stores everything.
cell wall found on the outside of a plant cell.
microscope microscope is used to see really small things.
buoyancy A force that acts in water and pushes objects upward.
Created by: cshepherd.12