Moon
Stars
Gravity
Earth
Galaxies
100
The moon's phases are split into two categories. What are the two categories called?
Waxing and waning
100
The time it takes the Sun's light to reach Earth.
8 Minutes
100
Gravity pulls everything in this direction.
An object's center
100
The reason Earth has night and day.
Earth's rotation
100
A galaxy with swirling arms, a center bulge, and a halo.
A spiral galaxy
200
Which statement is true?
-The moon does not rotate.
-The moon orbits the Sun.
-The moon has one side that never faces the Sun.
TRUE: The moon does not rotate.
The moon does not rotate on an axis, although, both sides of the moon eventually see sunlight as the Earth makes its orbit around the Sun.
200
At the end of its life, a small-to-average size star becomes a ______ _______ while a supermassive star becomes a _______ _______.
white dwarf
black hole
200
The scientist known for making the theory of gravity.
Sir Issac Newton
200
The reason the Earth has seasons.
Earth's revolution (orbit) around the Sun
200
An oddly shaped galaxy containing a large amount of dust and gas. No center bulge but filled with bright, young stars.
An irregular galaxy
300
The _____ affects the tides on Earth by pulling the _______ towards it or away from it.
1.) Moon
2.) Oceans
300
A unit of measure used for distances in space because objects are too far apart to use miles.
Light-years (the distance light can travel in one year)
300
Which object has the strongest gravity?
-Jupiter
-Mars
-Neptune
Jupiter
300
Northern hemisphere is having winter; southern hemisphere is having summer.
300
A galaxy shaped like a basketball or football, filled with older stars and little dust, with a bright center.
An elliptical galaxy
400
Astronomers prefer to observe the sky during moonless nights. Which phase would be best for them to study during?
New Moon when the moon seems "gone".
400
A star explodes right now.
The star is 457 light-years away from Earth.
When would the people on Earth see the explosion and why?
They would see the explosion 457 years in the future because that is how long it takes the light from that star to travel all the way to Earth. We wouldn't see it today because the light we would see tonight is actually 457 years old.
400
The process caused by a star's gravitational pull that creates planets and other orbital objects.
Accretion
400
Northern and Southern Hemispheres are experiencing either fall or spring.
400
The name of our galaxy and its category.
The Milky Way Galaxy; a spiral galaxy.
500
Why is it called a "quarter moon" when we look up at the sky and see half of the moon's surface? Why isn't it called a "half moon"?
The moon is a sphere - a 3-D object. We see only half of the moon at a time; the other half is hidden. When the half we see is only half lit up, we are actually seeing a quarter of the moon, or 1/4 of it.
We see 1/2 moon.
That 1/2 gets cut in 1/2, giving us 1/4 of the moon.
500
List the 5 stages of a star's life in the correct order.
1.) Stellar Nebula
2.) Main Sequence Star
3.) Red Giant
4.) Planetary Nebula
5.) White Dwarf
500
Explain what would happen to a human's weight and their mass if they went from Earth to the Sun, an object with a gravitational pull 28-times stronger than Earth's.
A human's weight would be much heavier once they're on the Sun because the stronger the gravity, the more you weigh. However, a human's mass wouldn't change at all.
500
Spring Tides occur during the ____ _____ phase and the ____ _____ phase.
Full moon and new moon
500
Space is moving. Why can we not tell that it's moving?
Simple - space is incredibly large and we are extremely small. We're too small to notice that we are moving.