
Astronomy 101 Midterm Exam 2 Study Guide, Spring 2025
Authored by Natalia Lewis
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100 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
What is a globular cluster?
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2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Name the various phases of the Moon.
New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Last Quarter, Waning Crescent.
New Moon, Full Moon, Blue Moon, Red Moon.
First Quarter, Last Quarter, Half Moon, Full Moon.
Waxing Crescent, Waning Crescent, Solar Eclipse, Lunar Eclipse.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the difference between specular reflection and diffuse reflection (also known as scattering)?
Specular reflection occurs on smooth surfaces and reflects light in a single direction, while diffuse reflection scatters light in many directions from a rough surface.
Specular reflection occurs on rough surfaces and scatters light in all directions, while diffuse reflection occurs on smooth surfaces and reflects light in a single direction.
Specular reflection and diffuse reflection both occur only on transparent surfaces.
Specular reflection absorbs all light, while diffuse reflection transmits all light.
4.
OPEN ENDED QUESTION
3 mins • 1 pt
What is a retroreflector?
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5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
List the units of angle measurement.
Degrees, arcminutes (arcmin), arcseconds (arcsec), and radians are all units of angle measurement.
Meters, kilograms, and seconds are all units of angle measurement.
Liters, joules, and newtons are all units of angle measurement.
Watts, amperes, and volts are all units of angle measurement.
6.
OPEN ENDED QUESTION
3 mins • 1 pt
What is angular diameter or angular separation?
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7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is meant by the 'dark side' of the Moon?
The side of the Moon that is not currently illuminated by the Sun; often refers to the far side of the Moon that is not visible from Earth.
The side of the Moon that is always facing the Sun.
The side of the Moon that is covered in permanent darkness and never receives sunlight.
The side of the Moon that is made entirely of dark-colored rocks.
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