1. What size are most exosolar planets that have been detected?
A. Small like the moon
B. Same size as earth
C. More massive than Jupiter
D. More massive than the sun
2. Which NASA space mission, launched in 2009, has the goal of determining if planets like earth are rare or common?
A. CoRoT
B. Kepler
C. PlanetQuest
D. Terrestrial Planet Finder
3. Most exosolar planets orbit their stars
A. In more than 88 days
B. In less than 50 days
C. In retrograde
D. In circular orbits
4. ______ orbit stars other than the sun.
A. Extrasolar planets
B. Dwarf planets
C. Jovian planets
D. Nebular planets
5. How do astronomers explain the orbit of hot Jupiters?
A. Doppler shifts
B. Nebula theory
C. Planetary migration
D. Astrometry
6. Scientists studying the orbit of an exosolar planet use ____ to measure the radial velocity of the parent star.
A. The Doppler effect
B. Radar
C. Comet trajectory
D. Solar system debris
7. Exosolar planets were discovered by observing their _____ wobble back and forth.
A. Rings
B. Parent star
C. Parent moon
D. Protosun
8. Which future U.S. mission will provide high resolution images of nearby exosolar planetary systems?
A. CoRoT
B. Kepler
C. PlanetQuest
D. Terrestrial Planet Finder
9. Hot jupiters is the term used to describe exosolar planets that orbit ____ their parent star.
A. Close to
B. Away from
C. In unison with
D. At varying distances from
10. When an exoplanet passes between earth and it's parent star, the parent star will appear to have _____ for the brief period during which view of it is obstructed.
A. Dimmed
B. Grown
C. Diminished
D. Radiate
1. C
2. D
3. B
4. A
5. A
6. B
7. C
8. B
9. A
10. A
Where are your answers?
Please check my answers
The answers changes. Also future proof them too
1. C more massive
2. A Extrasolar
3. A Doppler
4. A 88 days
5. A close to
6. B nebula
7. C diminished
8. B Kepler
9. A Rings
10. A CoRoT
1. To determine the size of most exosolar planets that have been detected, we can look at the options provided.
A. Small like the moon - We know that some exoplanets can be small, but it is unlikely that most of them are the same size as the moon.
B. Same size as earth - This is a possibility, as there have been discoveries of Earth-sized exoplanets.
C. More massive than Jupiter - Most exoplanets are smaller than Jupiter, so this is unlikely.
D. More massive than the sun - Planets cannot be more massive than their parent star, so this option can be ruled out.
Therefore, the answer is likely B. Same size as earth.
2. To determine which NASA space mission, launched in 2009, has the goal of determining if planets like Earth are rare or common, we can look at the options provided.
A. CoRoT - CoRoT is a European space mission, not a NASA mission.
B. Kepler - This is the correct answer, as the Kepler mission was launched in 2009 and its main goal is to determine the frequency of Earth-sized planets in our galaxy.
C. PlanetQuest - PlanetQuest is a NASA program focused on the search for exoplanets, but it is not the specific mission launched in 2009.
D. Terrestrial Planet Finder - This mission was proposed, but it was not launched in 2009.
Therefore, the answer is B. Kepler.
3. To determine how most exosolar planets orbit their stars, we can look at the options provided.
A. In more than 88 days - This is a possibility, as some exoplanets have longer orbital periods.
B. In less than 50 days - This is also a possibility, as some exoplanets have shorter orbital periods.
C. In retrograde - Retrograde orbits are less common, so this option is unlikely.
D. In circular orbits - While circular orbits are possible, not all exoplanets have perfectly circular orbits.
Therefore, the answer can be A. In more than 88 days or B. In less than 50 days.
4. To determine what type of planets orbit stars other than the sun, we can look at the options provided.
A. Extrasolar planets - This is the correct answer, as extrasolar planets refer to any planet outside of our solar system that orbits a star.
B. Dwarf planets - Dwarf planets are not exclusive to orbiting stars other than the sun, so this option is incorrect.
C. Jovian planets - Jovian planets refer to gas giants like Jupiter, which can exist in both our solar system and others.
D. Nebular planets - Nebular planets are not a recognized term in planetary science.
Therefore, the answer is A. Extrasolar planets.
5. To explain the orbit of hot Jupiters, we can look at the options provided.
A. Doppler shifts - This is the correct answer, as the radial velocity method, which relies on Doppler shifts, is commonly used to detect exoplanets.
B. Nebula theory - The nebula theory explains the formation of our solar system rather than the orbits of exoplanets.
C. Planetary migration - This is the correct answer, as hot Jupiters are thought to have migrated inward from their original orbits.
D. Astrometry - Astrometry is the study of the positions and motions of celestial objects, but it is not specifically used to explain the orbits of exoplanets.
Therefore, the answer is C. Planetary migration.
6. To determine what scientists use to measure the radial velocity of the parent star when studying the orbit of an exosolar planet, we can look at the options provided.
A. The Doppler effect - This is the correct answer, as the radial velocity method relies on measuring the Doppler shift in the star's spectrum.
B. Radar - Radar is not commonly used to measure the radial velocity of stars in relation to exoplanets.
C. Comet trajectory - Comet trajectories are not related to measuring the radial velocity of stars.
D. Solar system debris - Solar system debris is also not used to measure the radial velocity of stars.
Therefore, the answer is A. The Doppler effect.
7. To determine what scientists observed to discover exosolar planets, we can look at the options provided.
A. Rings - The wobbling motion of the rings of a planet would not indicate the presence of an exosolar planet.
B. Parent star - This is the correct answer, as the wobbling back and forth of a star is caused by the gravitational pull of an exosolar planet.
C. Parent moon - Exosolar planets do not have moons that cause them to wobble.
D. Protosun - Protosuns are young, developing stars, and their wobbling motion would not indicate the presence of exosolar planets.
Therefore, the answer is B. Parent star.
8. To determine which future U.S. mission will provide high-resolution images of nearby exosolar planetary systems, we can look at the options provided.
A. CoRoT - CoRoT is a European space mission and is not the future U.S. mission in question.
B. Kepler - Kepler is not designed to provide high-resolution images, so this option can be ruled out.
C. PlanetQuest - PlanetQuest is a NASA program focused on the search for exoplanets, but it is not the specific mission mentioned.
D. Terrestrial Planet Finder - This mission, if developed, would be capable of providing high-resolution images of exosolar planetary systems.
Therefore, the answer is D. Terrestrial Planet Finder.
9. To determine what "hot Jupiters" means in relation to the orbit of exosolar planets, we can look at the options provided.
A. Close to - This is the correct answer, as "hot Jupiters" are exosolar planets that orbit very close to their parent star.
B. Away from - "Hot Jupiters" are not exosolar planets that orbit away from their parent star.
C. In unison with - "Hot Jupiters" are not exosolar planets that orbit in unison with their parent star.
D. At varying distances from - "Hot Jupiters" specifically refer to exosolar planets that orbit very closely to their parent star.
Therefore, the answer is A. Close to.
10. To determine how a parent star appears when an exoplanet passes between Earth and the star, we can look at the options provided.
A. Dimmed - This is the correct answer, as the exoplanet's transit in front of the star causes a temporary decrease in brightness, dimming the star's light.
B. Grown - The star does not appear to grow when an exoplanet passes between it and Earth.
C. Diminished - "Diminished" is another way to describe the temporary decrease in brightness caused by the exoplanet's transit.
D. Radiate - The parent star continues to radiate its own light, but it appears dimmed during the brief obstruction caused by the exoplanet.
Therefore, the answer is A. Dimmed.
My answers are
1. C
2. B
3. D
4. A
5. B
6. A
7. A
8. C
9. C
10. C
The correct answers:
1. C
2. B
3. B
4. A
5. C
6. A
7. B
8. D
9. A
10. A