Orbits & Motion
Planets closer to the Sun orbit ________ than planets farther from the Sun
During a first or third quarter Moon, Earth experiences this specific type of tide.
neap tide
Which would change if you traveled to the Moon: your mass or your weight?
your weight
Finish this statement of Newton's 1st Law: An object at rest __________
remains at rest, and an object in motion remains in motion unless acted on by an external force
The first picture of the day of this year was a picture of _____________
the SMC and LMC
When the radius of a spinning object decreases, its speed does this to conserve angular
What is increase?
When the Moon’s rotation rate matches its revolution around Earth, we see only this.
One side of the moon
The amount of matter in an object is called ______.
mass
This scientist formulated the universal law of gravitation.
Isaac Newton
Which meteor showers are happening now?
The Taurids
Newton revised Kepler's 3rd Law so that if you know how far away an object is orbiting and how much time it takes to orbit, then you can determine the _______ of the object being orbited.
mass
The Moon’s distance from Earth increases by a few centimeters each year due to this process.
tidal friction
This quantity changes depending on gravity and is what you actually “feel” as heaviness.
weight
Angular momentum stays the same when no external ____ acts on an object.
torque
Who convinced Newton to publish his work on gravity and orbits?
An example of a bound orbit
Ellipse, or circle
How many high tides and how many low tides are there in most places on Earth in a 24 hour period?
Two high tides and two low tides
Astronauts orbiting Earth feel “weightless” because they’re in continuous _____.
free fall
Which of Newton's Laws states that every action has an equal and opposite reaction?
Newton's Third Law
Today's moon phase
Waxing gibbous