This moon phase is smaller than half and the lighted side is on the right.
What is waxing crescent?
200
What is the shortest main type of electromagnetic radiation?
What is radio waves?
200
Name three characteristics used to classify stars.
What is color, temperature, size, composition, and brightness.
200
This determines how long a star will exist.
What is its mass? Stars will more mass live shorter than stars with less mass.
200
A huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity.
What is a galaxy?
200
100% of the moon is visible
What is full moon?
300
What are the two major types of optical telescopes?
What are refracting and reflecting.
300
Why do astronomers use spectrographs?
What is to determine the chemical composition of a star.
300
What happens when a star runs out of fuel?
What is it becomes a white dwarf, a neutron star, or a black hole.
300
Describe the three types of galaxies.
What is spiral (pinwheel), elliptical (flattened ball) and irregular (no regular shape).
300
This moon phase is larger than half and the lighted side is on the left.
What is waning gibbous?
400
Why are many large observatories located on mountaintops or in space?
What is because it is clearer on mountaintops than at sea level and light from cities do not interfere.
400
Compare and contrast absolute and apparent brightness.
What is apparent brightness is how bright the star is from Earth. Absolute brightness is the brightness of a star if it were at a standard distance from Earth.
400
What will happen to the sun when it runs out of fuel? Explain.
What is its outer layers will expand and it will become a red giant. Eventually, the outer layers of the red giant will drift into space and the remainig hot core will be a white dwarf.
400
The name of our galaxy.
What is the Milky Way?
500
How does a reflecting telescope work?
What is a curved mirror is used to collect and focus light.
500
What is a parallax?
What is the apparent change in postion of an object when viewed from different places.
500
An object with gravity so strong that nothing, not even light, can escape.
What is a black hole?
500
Why do astronomers use scientific notation?
What is to describe sizes and distances in the universe since those numbers are often very large or very small.