Solar System
Why is Earth the only planet known to support life?
It has water in solid, liquid, and gas states. Located in the 'goldlilock' part of the solar system.
What planet is the hottest because it has an atmosphere that is thick and made up of carbon dioxide?
Venus
An astronomical unit is the...
Distance from the sun to Earth
The solar system is made up of...
Planets orbiting the sun and moons orbiting planets
What are the two factors that affect gravitational force?
Mass and distance
List the planets from closest to farthest.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
What planet is the smallest with the shortest revolution?
Mercury
True or False: Astronomical units are best used to measure distances between galaxies.
False, best within the solar system.
True or false: The universe is constantly expanding
True
Object A is 5 meters away, Object B is also 5 meters away. Object A has a mass of 100 kg while Object B has a mass of 50 kg. Which will have more gravitational force? Why?
Object A because it has more mass
What planet is the largest in our solar system?
Jupiter
What planet will have the longest revolution?
Neptune
A star is 65 light years from Earth; how long before light reaches Earth?
65 years
True or false: The universe is the most object, containing all matter and energy.
True
Gravitational pull on an object, changes planet to planet
Which two planets have an atmosphere that causes a 'greenhouse' effect?
Earth and Venus
Which two planets have no moons due to being so close to the sun?
Mercury and Venus (the sun's gravity is too strong)
A light year is....
The distance light can travel in one year.
Geocentric model/theory
What has object the strongest gravitational force within our solar system?
The sun