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What force holds the planets in motion around the sun?
Gravitational
What force brings the pencil down?
Gravitational
What is gravity?
The force of attraction between any two objects
What is mass?
The amount of matter in an object
The force of gravity (mass x gravity) is also known as...
weight
Mass and weight are the same thing.
False
Large mass of stars
Galaxy
A star is a big ball of hot gases. The gases are mostly hydrogen and _______________
helium
All of the galaxies together is _______. ? nebula - solar system - Milky Way - universe
universe
Elliptical, spiral, and irregular are all types of ______. ? solar systems - universes - galaxies - stars
galaxies
What color of star is the hottest? Blue - Red -Yellow- Orange
Blue
What color of star is the coolest? Red - Yellow - Blue - White
Red
