Orbital Motions
This term describes the action of a planet spinning on its axis, causing day and night.
rotation
The gravitational force on the moon is much ______ than it is here on Earth. greater or less?
less
The strength of the gravitational force between two objects depends on what TWO factors?
mass and distance
Our solar system resides in what galaxy?
The Milky Way Galaxy
Do you weigh more on earth or on the moon.
The earth
This term refers to the movement of a planet around the Sun in an ellipse, taking about a year for Earth to complete one cycle.
orbit
What is responsible for moons and satellites orbiting Earth?
gravity
As mass increases, gravitational force ___________.
As mass decreases, gravitational force ___________.
increases
decreases
Which planet is sometimes called "The Red Planet"?
Mars
This measurement varies depending on the force of gravity acting on an object and changes with location, such as on different planets or the Moon.
weight
About how long does it take Earth to make one full rotation?
24 hours (23 hours, 56 minutes and 4.09053 seconds to be exact)
The gravitational pull from the moon is largely responsible for what on Earth?
high and low tides
As distance increases, gravitational force _____.
As distance decreases, gravitational force _____.
decreases
increases
Rank the Sun, moon, and Earth in order of gravitational pull starting with the largest.
1. Sun, 2. Earth, and 3. Moon
On which planet would you weigh the most?
Jupiter
How long does it take for Earth to revolve around the Sun once?
365 days (365 days, 6 hours, 9 minutes to be exact)
Does the arrow indicating the direction of the moon's gravitational pull on Earth's waters go towards the moon or towards the earth?
towards the moon
Earth’s gravity constantly pulls matter where?
toward the center of the Earth
This model, proposed by Nicolaus Copernicus in the 1500s, correctly placed the Sun at the center of the solar system, challenging the previously accepted Earth-centered view (geocentric).
heliocentric (earth being the center of the universe)
This is a word for anything that orbits a planet, so by definition, a moon is a natural one of these.
satellite
Who wrote the universal law of gravity?
Sir Isaac Newton