Planets of the solar system
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Moon phases
New moon-quarter-Full-Third quarter-Reset
Day and Night
Earth spins on an axis. Side facing Sun=day, side not facing sun=Night
Seasons
The axis is on a tilt. The hemisphere facing the sun is summer and the other is winter. less area, more sunlight=summer, more area, less sunlight=winter
Solar eclipse
Earth is in the moon's shadow. sun is blocked
Lunar eclipse
Moon is in the earths shadow. Moon is blocked
Tides
Created by the moons gravitational pull on the Earths water
Force
A push, pull or twist can change an objects shape speed or direction
Contact force
occurs between objects in contact
non contact force
occurs between objects not touching eachother
Weight
Force applied on an object by gravity (N)
Mass
The amount of matter in an object (grams, kilograms etc)
Balanced force
Force of equal size
Unbalanced forces
Forces of unequal size, can speed up slow down or change an objects direction.
Friction
A contact force that opposes the movement of an object. acts in the oppposite direction to the objects movement.
Effects of friction
It creates heat. It slow objects down
Gravity
A non contact force that acts between any pair of objects. The larger the object, the greater the gravitational pull, which is why we are pulled towards earth.
How are forces represented
with arrows. Bigger arrow=bigger force. Start from objects center of gravity.
Reliability
When multiple trials are conducted and you get similar results.
independent variable
The thing you change
Dependant variable
The thing you measure
Controlled variables
Everything that you keep the same
ST PAULS
Scale, title, Points as x, axis (dependent on y), units next to axis, line of best fit