Random #1
This is what causes day and night
Earth's Rotation
These two things combined cause the seasons
Earth's tilted axis and its revolution around the sun
Is it true to say that craters and astronauts’ footprints on the moon will eventually disappear, because of erosion on the moon? (Yes or no)
No!
_______ is the spinning of Earth on its axis (1 of Earth
around the sun = 1 day!)
____ Rotation ____ is the spinning of Earth on its axis (1 of Earth
around the sun = 1 day!)
______ is the movement of one object around another (1 of Earth around the sun = 1 year!)
____ Revolution ____ is the movement of one object around another (1 of Earth around the sun = 1 year!)
This is what would happen if the Earth's axis became straightened
There would be no change of seasons
___ measures the amount of matter that makes up an object
___ measures the force of gravity that acts on an object
Mass, weight
The ______ is the darkest part of the moon’s shadow; it is a small region
The ____ umbra ____ is the darkest part of the moon’s shadow; it is a small region
_______ is the tendency of an object to resist a change in motion
____ Inertia ____ is the tendency of an object to resist a change in motion
The _______ is the brighter part of the moon’s shadow; it is a larger region
The ____ penumbra ____ is the brighter part of the moon’s shadow; it is a larger region
This is why Earth does not have craters to the degree that the moon does.
Because of liquid water and wind erosion on Earth
mass
___ ____ is when the sun and moon pull in the same direction, producing a tide with the biggest difference between high and low
___ Spring tide ____ is when the sun and moon pull in the same direction, producing a tide with the biggest difference between high and low
___ ____ when the sun and moon pull at right (90 degree) angles from each other, producing a tide with the smallest difference between high and low
___ Neap tide ____ when the sun and moon pull at right (90 degree) angles from each other, producing a tide with the smallest difference between high and low
The ________ is an imaginary line that passes through Earth’s center and the North and South poles
axis
These are the names of two of Newton's laws that we have discussed
law of universal gravitation; 1st law of motion
Every object at rest will stay at rest unless acted on by an outside force; every object in motion will continue in motion in the same direction at the same speed unless acted on by an outside force.
Is it true to say that Earth’s gravity pulls you, but your gravity also pulls on Earth? (Yes or no)
Yes
During this tide, there is the least difference between high and low tide
What is neap tide?
This is why the moon has such extreme changes in temperature
The moon has a weak gravity and thus has no atmosphere
These are the two factors that determine the strength of gravity between objects
Mass and distance
This is what keeps the planets in orbit
A balance of inertia and gravity
The tides are mostly caused by this:
The moon's gravity pulling on Earth
This is how the moon formed:
A planet-sized object collided with Earth and broke off pieces, which pulled together as the moon
These are the moon's three qualities that we discussed
Dry and airless
Small
Big changes in temperature
Fall and Spring start when the noon Sun is directly over the equator. This is:
An equinox
Summer and Winter start when the noon Sun is North or South of the equator. This is:
A solstice
This is Newton's law of universal gravitation
All objects in the universe pull on each other
This is what the phases of the moon are caused by
How much of the sunlit side of the moon faces the Earth
This is the location of a total solar eclipse (complete shadow)
Umbra