Astro 7N PSU Exam 1 Questions And Answers
1. Newton's 1st Law An object at rest stays at rest unless acted
upon by a force
2. Newton's 2nd Law F=ma
3. Newton's 3rd Law For every action, there is an equal and
opposite reaction
4. Strength of Gravity g=M/(R^2)
5. Force of Gravity F=(M1M2/(D^2))
6. Sun's Movement East to West
Due to Earth's rotation
7. Phase Order of the Moon New --> Waxing Crescent --> First
Quarter --> Waking Gibbous --> Full -->
Waning Gibbous
--> Third Quarter --> Waning Crescent -->
New
8. Full Moon Sun--Earth--Moon
9. New Moon Sun--Moon--Earth
10. Constellation Large defined area in the
sky There are 88
11. Forms of Light Gamma, X-Ray, UV, Visible, Infrared,
Microwave, Radio
12. Bluer Color Short wavelength
High frequency
13. Redder Color Long
wavelength
Low
frequency
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, Astro 7N PSU Exam 1 Questions And Answers
14. Continuum Spectrum Light at all wavelengths
15. Absorption Spectrum Shows dark lines in the spectrum at
certain wavelengths
Produced by a gas cloud in front of a light
source
16. Absorption Line Dark lines in the spectrum at certain
wave- lengths
Produced when photons are absorbed by elec-
trons and the electrons move from a lower
to higher energy level
17. Emission Line Bright lines at specific wavelengths
Due to emission of photons from atoms
Produced when electrons jump from
higher to lower energy levels
18. Light-Gathering Power Important quality of a telescope
Amount of light a telescope can
gather
19. Angular Resolution The ability of a telescope to distinguish
two nearby light sources
20. Atmospheric Problems Certain kinds of radiation can't get
through the atmosphere so we can't see a
clear picture from a telescope on the
ground
Atmosphere blurs
21. Kepler's 1st Law The planets orbit the sun in elliptical orbits
22. Kepler's 2nd Law A planet's speed is fastest when its
closest to the sun and slowest when its
farthest away
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1. Newton's 1st Law An object at rest stays at rest unless acted
upon by a force
2. Newton's 2nd Law F=ma
3. Newton's 3rd Law For every action, there is an equal and
opposite reaction
4. Strength of Gravity g=M/(R^2)
5. Force of Gravity F=(M1M2/(D^2))
6. Sun's Movement East to West
Due to Earth's rotation
7. Phase Order of the Moon New --> Waxing Crescent --> First
Quarter --> Waking Gibbous --> Full -->
Waning Gibbous
--> Third Quarter --> Waning Crescent -->
New
8. Full Moon Sun--Earth--Moon
9. New Moon Sun--Moon--Earth
10. Constellation Large defined area in the
sky There are 88
11. Forms of Light Gamma, X-Ray, UV, Visible, Infrared,
Microwave, Radio
12. Bluer Color Short wavelength
High frequency
13. Redder Color Long
wavelength
Low
frequency
1/
12
, Astro 7N PSU Exam 1 Questions And Answers
14. Continuum Spectrum Light at all wavelengths
15. Absorption Spectrum Shows dark lines in the spectrum at
certain wavelengths
Produced by a gas cloud in front of a light
source
16. Absorption Line Dark lines in the spectrum at certain
wave- lengths
Produced when photons are absorbed by elec-
trons and the electrons move from a lower
to higher energy level
17. Emission Line Bright lines at specific wavelengths
Due to emission of photons from atoms
Produced when electrons jump from
higher to lower energy levels
18. Light-Gathering Power Important quality of a telescope
Amount of light a telescope can
gather
19. Angular Resolution The ability of a telescope to distinguish
two nearby light sources
20. Atmospheric Problems Certain kinds of radiation can't get
through the atmosphere so we can't see a
clear picture from a telescope on the
ground
Atmosphere blurs
21. Kepler's 1st Law The planets orbit the sun in elliptical orbits
22. Kepler's 2nd Law A planet's speed is fastest when its
closest to the sun and slowest when its
farthest away
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