Stars #1
Earth
Stars #2
Seasons
Mixed
100
What are the two main elements found in stars?
Hydrogen and Helium
100
What degree is the Earth tilted on it's axis?
23.5 degrees
100
What happens to a high mass star when it has reached the end of it's life and explodes?
It becomes a supernova
100
If it is spring in the northern hemisphere, then it is __________ in the southern hemisphere?
Fall
100
A group of stars that form a pattern is called a(n) __________ .
constellation
200
What determines whether a star becomes a red giant or a red SUPERgiant?
a) Its brightness
b) Its mass
c) Its color
b) Its mass
200
One complete orbit of the Earth around the sun is called what?
A revolution
200
What is the part of the nova that explodes into space?
planetary nebula
200
What date does the summer solstice occur on in the northern hemisphere?
June 21
200
The scientific study of stars is called _____________.
astronomy
300
Why did ancient civilizations use the stars for?
Navigation/Time Keeper
300
Why do we have time zones?
As earth rotates, different parts of the earth receive sunlight at different times.
300
Factors that control the apparent brightness of a star as seen from Earth: a) how big it is b) how hot it is c) how far away it is d) all of the above
d) all of the above
300
What does equinox mean, and how many hours are in the day and night?
equal night; 12hrs
300
What is one complete turn on earth's axis called?
a rotation
400
Our sun is an example of what type of star?
Low Mass (Main Sequence) Star
400
When does the spring equinox occur?
March 20
400
Which phase of a star's life cycle does a star spend most of it's life in?
the main sequence.
400
Which two places on Earth experience only 2 seasons a year?
the north and south pole
400
After a supernova a high mass star either becomes a __________ or a ___________ .
a neutron star or a black hole
500
Which object has a very strong gravitational pull?
Neutron Star
500
What is the time difference between pacific and central time?
2 hours
500
What is the brightest star in our solar system?
Sirius
500
What season is it in northern and southern hemisphere?
Summer in the south, winter in the north
500
What is unique about the winter solstice in the North pole?
24 hour night