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What is the difference between apparent and absolute magnitude?
Apparent magnitude is how bright a star appears to an observer on Earth. It's the brightness we see from our perspective.
Absolute magnitude is how bright a star would appear if it were located at a standard distance of 10 parsecs (about 32.6 light-years) from Earth. (Actual brightness)
Protostar
True or False? The Earth is closer to the sun during the month of December.
True
Order the inner planets the order of closest to furthest from the Sun.
Convert 5.4 LY to km
5.12 × 10¹³ kilometers
What factor decides a star’s life cycle path?
The mass of the star
What defines a “day” on Earth?
Earth's rotation on its axis
What are some examples of gas giants?
What do the spectral lines of light from a star show?
The different elements (chemical composition) that the star is made up of
What causes sunspots on the Sun’s surface?
magnetic activity
During what phase of the Moon do solar eclipses occur?
Full moon
What is one astronomical unit (AU)?
150 million km
What were the clues that ancient astronomers found to show that the Earth is not flat?
Disappearing ships, Earth's curved shadow on the moon during a lunar eclipse, the changing sky
Name three "labels" of the H-R diagram
Temperature (x axis), Luminosity (y axis), Main Sequence Stars.
Which type of eclipse is this?
Sun -- Moon ---Earth
Name the type of galaxies.
Spiral, Elliptical and Irregular
If the star above is moving away from the earth how will the position of the spectral lines change over time.
It will shift towards the red side of the spectrum known as the "redshift".
90 % of the stars in our galaxy are plotted in the __________________________ of the H-R diagram
Main sequence
What is the 4th phase of the moon if "new moon" is phase 1?
Waxing Gibbous
What reaction occurs within the sun?
Nuclear fusion of 2 hydrogen atoms to form helium