1. Fall Winter Summer Spring
Artic Circle
Equator
23 ½ ◦
Equator
Sun
Equator
Tropic of
Capricorn
Tropic of
Cancer
Winter
Summer
Equator
Spring

2. The amount of matter in an object
a=9.8 m/s/s
Weight
Mass
inertia
Force (vector)
Force of gravity
The amount of matter in an object
Si unit (metric) = newton
Si unit (metric) = kg
Quantity
Tool used Spring scale
Tool used is a TBB
Changes on the moon
Never changes

3. Geo = earth-centered
Geocentric model has Earth in the center
Helio = sun-centered
Heliocentric model has the sun in the center
Copernicus discovered it and Galileo proved it.
Newton contributed inertia and gravity
Gravity = pull between objects.
Gravity increases with mass & nearness.
Gravity cause tides & keeps us, earth, and the moon from flying STRAIGHT off in space.
The sun has nuclear energy (not fire)
Sunspots are dark cool spots
Solar flares cause magnetic storms.
Magnetic storms can disrupt communication.

4. Inner planets
Outer planets
Solid surface
Composed of gas
Thin to no atmosphere
Gaseous (100% thick atmosphere)
Inside the “A” belt
Outside the “A” belt
Small orbits (yr)
Means wandering star
large orbits (yr)
Mercury, Venus, Earth & Mars
Jupiter, Saturn, Uranus & Neptune
Few moons & NO rings
All have rings &
large number of moons
Small & Rocky
Large and Gaseous
High density
Low density

5. Comets=made of dust & ice
Comets=long & narrow orbit
Asteroids=medium sized rock
Asteroids= circular orbit
Meteor= shooting star
Meteorite= a rock from space that hits earths surface
The moon is always half lit.
Phase is determined by the amount of the sunlit side facing earth.