Sun
What is the sun made of?
Very hot gases
What force holds the moon in orbit around the Earth?
Gravity
Where are stars formed?
Nebula
Why do daylight hours change throughout the seasons?
It is caused by the amount of sunlight that shines on the Earth as it orbits the sun.
How does MASS affect gravity?
The greater (or larger) an object's gravity, the stronger its gravity will be.
OR: A large object will pull a smaller object more forcefully.
What stage of a star life cycle's is our sun?
Red Giant
How long does it take the moon to orbit the Earth?
About 28-31 days
A collection of stars, gases, dust, planets held together by gravity is called what?
Galaxy
Why do shadows change throughout the day?
The Earth rotates in and out of daylight, so the shadow changes its position and length.
How does the moon affect the Earth's tides?
What are the dark, cool areas on the sun called?
Sunspots
How long does it take the Earth to orbit the sun?
365 and 1/4 days
How is a star born?
Clouds of gas and dust swirl around into clumps and get hotter in a nebula.
What causes seasons?
The LOCATION of the Earth around the Sun and its TILT towards or away from the Sun.
Why would I weigh less on the Moon and more on Jupiter?
The Moon has less gravity and Jupiter has more gravity.
Why are we able to see and feel the sun’s energy, but not other stars?
The sun is much closer to us than other stars.
What is it called when the moon seems to get larger, then smaller?
Waxing or waning
What are the life cycle stages of MASSIVE stars?
Nebulae, protostar, red giant, planetary nebulae, supernova, neutron star, black hole
What is a galaxy?
Groups of stars, gases, dust and planets held together by microgravity.
What makes gravity stronger or weaker?
What are the 4 main layers of the sun?
Core, radiative, convective, photosphere
What are the phases in the moon IN ORDER?
New Moon, Full Moon
waxing crescent, Waning gibbous
1st quarter, 3rd quarter,
waxing gibbous Waning crescent
Why do stars shine?
Constant fusion and splitting of atoms, creating massive explosions and energy.
What 2 forces keep planets and moons in orbit?
Distance and gravity
What two things keep the Earth & Moon in orbit around the Sun?
Size and distance. The sun pulls the Earth and Moon in but they are far enough away from the Sun to be safe.