Show:
Force of Gravity
Orbital Motion
Earth and Moon
The Solar System
Vocabulary
100
This is an attractive force between all objects that have mass.
What is gravity?
100
Earth completes one orbit motion around the Sun in ___
What is 365 days?
100
One lunar day takes __ Earth days.
What is 27/28?
100
Is the moon a planet or a star?
Neither, its a MOON! :)
100
This planet has life on it.
What is Earth?
200
Gravity is affected by two things.
What is mass and distance?
200
The Moon moves in a 384,000 km orbit around this.
What is Earth?
200
Where do scientists think our moon came from?
It is theorized that an object collided with our planet and broke into small fragments which were later pulled together by gravity to form our moon. (Part of that evidence stems from the fact that some of the minerals found on earth are also on the moon).
200
This is by far the largest object in our solar system.
What is The Sun?
200
DOUBLE JEOPARDY!! What is the "process of clumping together to form larger objects"?
Accretion
300
DOUBLE JEOPARDY!!!!!! This decreases the force of gravity.
What is increasing distance or decreasing mass?
300
This is the repeating circular path an object takes around a gravity source, such as a planet or star.
What is orbit?
300
This is a cycle of rising and falling sea levels that repeats every 12 hours (caused by the moons gravity)
What is a tide?
300
Mercury, Venus, Earth, and Mars are known as ___
What are terrestrial planets?
300
This is the remains of a dead star, a collection of gas and dust that can form into a new star/solar system.
Nebula
400
What would cause the earth and planets to fly off in different directions?
What is turn gravity off?
400
How can you increase the size of an orbit? (think back to the PHET simulation)
Increase the distance, or decrease the mass
400
Which planets in our solar system do not have moons?
Venus & Mercury (because they are so close to the sun)
400
Why are the gas giants so much larger than the terrestrial planets? (think back to how the solar system formed).
Because the gas giants were formed in the outer region, where there was a lot more gas and dust that had been swept away by the solar wind. More gas & dust = larger planets.
400
what is the term used to describe a small object which will form into a planet?
planetesimal
500
How did gravity form the solar system?
It pulled together gas and dust particles in a solar nebula, and ice/rocks together to form planets
500
If objects with small masses orbit objects will larger masses, why don't we orbit a star that is much larger than our sun?
Because the sun is much closer
500
How did our planet form?
During the early stages of our solar systems development, gravity pulled together rocks through the process of accretion and formed a planetesimal which eventually became a planet.
500
Compare the densities of the terrestrial planets and the gas giant planets
Gas giants are much less dense because they are mostly atmosphere, while the denser terrestrial planets are mostly rocky
500
What do we call the time it takes to orbit the sun? (the answer is not "1 year"... think of the science vocabulary term we learned)
Period of revolution.