Sun
What phase is our star, the sun in?
Main sequence
Why is are earth tilted onto an angle?
Because a meteor hit our earth moving it to a tilt
How many moon phases are there?
8
What is the subject that HRD shows information about?
Stars
True or False, A star is an extremely heavy ball
False
True or false, the sun is a big star compared to other stars?
False, the sun is pretty small compared to other stars.
Why do we have seasons
Because our earth is orbiting around the sun making warmth hit different parts of the Earth.
what is the first phase of the moon?
New moon
True or false, can stars be different sizes?
True
About how long do stars shine for?
About 5 billion years
How do we get sunlight?
The sun's rays bounce off things in space like meteors and reflect onto Earth.
Which number order planet is the earth in our solar system (From the sun)
The third
True or false, It takes a year for the moon to go through all its phases?
False
Hertzsprung Russell diagram
Which color can a star not be? Blue, White, Orange, Yellow, Brown, or red
Brown
What causes shadows?
The position in the sky that the sun is in facing a solid shape. Then since the sun rays cant go through a solid shape a shadow is cast behind that shape because the sun cant reach.
How long does it take for earth to do a full rotation around the sun.
356 days, aka a year
What is the moon phase that comes after the new moon?
Waxing crescent
Name the 4 types of stars that HRDS almost always have of them.
Red Giants, Red Super Giants, Main sequence, and White Dwarfs
What is the difference between apparent brightness and true brightness?
True brightness is the actual brightness of the star, apparent is the brightness that we see from our view of earth
How far away is the sun from the earth?
93 million miles away
Why do we experience day and night?
Because our earth rotates or spins making the sun light face different parts of our earth at different times periods, making it light and dark.
True or false, Tides on the opposite side from where the moon is facing the earth are high
True
What qualities does HRDS measure?
Brightness and temperature
What the difference between how a low mass star ends there life versus a high mass star?
High mass explodes and turns into energy, Low mass cools down and losses its light