Random
Can we see gravity?
No, it is an invisible force.
What has more gravity-- a bowling ball or a tennis ball?
Bowling ball (it has more mass).
Which planets have more mass-- the inner planets or the outer planets?
The outer planets.
Which one changes if you were to go to the moon -- mass or weight?
Weight
Why is Pluto not considered a planet?
It is too small to clear its orbit path.
Orbit is a balance of _____________ & ______________
Gravity & Velocity
What is the definition of gravity?
A force of attraction between 2 objects.
Name the 4 inner planets in order:
Mercury, Venus, Earth, Mars
Why do astronauts weigh less on the moon?
Because the moon has less mass, therefore less gravity.
Which planet has a thick, toxic atmosphere that smells like eggs due to all the sulfuric acid?
Venus
What is the nickname of planet Earth because it has conditions that are "just right" for life?
The Goldilocks Planet
True or False: gravity only exists on Earth.
Name a planet that is made of GAS:
Which planet would you weigh the most on and WHY?
Jupiter because it has more mass
Which planet has the most moons?
Saturn
Name a limitation you often see on models of the solar system:
Distance between planets, relative sizes of the planets, colors, orbit
As the distance between objects increases, the force of gravity between them will _______________________.
As the distance between objects increases, the force of gravity between them will DECREASE.
Name all the planets in ORDER while closing your eyes!
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
If Earth had more mass, what would happen to your weight?
Your weight would increase / you would weigh more.
What is the speed called that allows something to go into orbit? What is the speed called that causes something to fly out of orbit? There are 2 answers.
Orbital velocity / Escape velocity
Why don't the planets get sucked into the Sun's gravitational pull?
Because they are moving quickly (their velocity is balancing the gravitational pull allowing them to orbit).
What is gravity measured in?
Newtons
How did gravity help form the planets?
Gravity pulled together gas and dust that clumped together to eventually become planets.
On what planet would you weigh the most similar to what you do on Earth?
How far away from the sun is planet Earth? In miles.
93 million miles away.