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4th test for physics Astromony that are not that hard but some are

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ASTRONOMY I :  PRACTICE TEST for Chapters 9,10,11,12



1. Why are large satellites spherical?

a. tidal forces from the planet they orbit force them to be spherical

b. the impact of meteoroids removes irregularities

c. strong magnetic fields

d. gravitational compression



2. Which of the following is responsible for maintaining thin ring systems?

a. shepherd satellites

b. magnetic fields

c. impacts with moons

d. solar winds



3. Why is there no evidence for small impact craters on Venus?

a. no objects have ever reached the surface, due to Venus' strong 
magnetic field

b. the thick atmosphere burns up most small meteors

c. the impact craters have been eroded by water and wind

d. the question is incorrect, there are many small impact craters on Venus



4. Which of the following is NOT a feature of Venus' surface?

a. volcanoes

b. large impact craters

c. lava flows

d. river channels



5. The temperature on the surface of Venus is closest to ___ degrees F.

a. 100

b. 500

c. 1,000

d. 10,000

e. 1,000,000



6. Venus' atmospheric chemical composition is mostly

a. nitrogen.

b. carbon dioxide.

c. oxygen.

d. water vapor.

e. hydrogen.



7. If indeed the Earth has the same total amount of carbon dioxide as 
Venus, why is such a small amount found in

     the atmosphere?

a. the statement is false - Venus and the Earth do NOT have the same 
total amount of carbon dioxide

b. the statement is false - the amount of carbon dioxide in the 
atmosphere of the Earth is the same as for Venus'

     atmosphere

c. the high temperature of Venus excites the carbon dioxide more than 
does the lower temperature on Earth

d. the plants on Earth have decreased the amount of carbon dioxide to 
where it is today

e. the Earth's lower temperature allows the carbon dioxide to be held in 
the oceans and rocks



8. Which one of the following is important in producing the greenhouse 
effect?

a. slow rotation

b. carbon dioxide

c. strong magnetic field

d. rapid rotation

e. oxygen



9. Why is the surface of Venus so hot?

a. atmospheric carbon monoxide transmits visible light and absorbs 
infrared light.

b. atmospheric carbon dioxide transmits visible light and absorbs 
infrared light.

c. atmospheric carbon monoxide transmits infrared light and absorbs 
visible light.

d. atmospheric carbon dioxide transmits infrared light and absorbs 
visible light.



10. Modern data indicate that Venus

a. shows extensive, rapid, and current continental drift.

b. is as bright at the surface as is the Earth.

c. has never had volcanic activity.

d. may have recent volcanic activity.



11. In terms of composition, the atmosphere of Mars is most similar to 
that of

a. Mercury.

b. Venus.

c. Earth.

d. Moon.



12. Which of the following is NOT a feature of Mars?

a. frost

b. clouds

c. dust storms

d. melting ice caps

e. spring floods



13. The major constituent of the Martian atmosphere is

a. water.

b. carbon dioxide.

c. nitrogen.

d. oxygen.

e. none of the above since they are about equal in abundance



14. A major reason for the size of volcanos on Mars is

a. the probable lack of continental drift on Mars.

b. the rapid motion of continental plates on Mars.

c. the large number of strong eruptions present on Mars.

d. flowing water (in the past) eroded them away.



15. The Viking life-detection experiments were designed to

a. analyze amino acids from living organisms.

b. look for large organisms moving across the Martian landscape.

c. look for signs of metabolic activities.

d. examine the decay products of dead organisms.



16.  Which planet is the least differentiated?

a. Mercury

b. Venus

c. Earth

d. Mars



17. Which of the following is NOT one of the factors which distinguishes 
the Jovian planets from the terrestrial

        planets?

a. the Jovians are more massive

b. the Jovians are colder

c. the Jovians have higher densities

d. the Jovians have stronger magnetic fields

18. Which of the following is/are observed in the atmosphere of Jovian 
planets?

a. oxygen

b. water

c. carbon dioxide

d. methane and ammonia



19. The fact that Jupiter has a strong magnetic field was deduced from 
observations

a. from the Voyager spacecraft.

b. of radio emission from the planet as seen from Earth.

c. of thermal radiation at long wavelengths as seen from Earth.

d. of ultraviolet radiation as seen from Earth.

e. of lightning in the upper atmosphere as seen from Earth.



20. Near the core of Jupiter, hydrogen is

a. a low temperature gas.

b. a high temperature gas.

c. a solid.

d. a liquid.

e. a liquid metal.



21. How do we know what the internal structures of the Jovian planets 
are like?

a. probes have been sent into the interiors of the planets and have 
returned data about the conditions

b. astronomers use the Earth's internal structure as a basis of comparison

c. astronomers examine the composition of the satellites of these planets

d. astronomers use information about the physical characteristics as 
well as laws of physics to obtain

     theoretical models



22. Which of the following statements is FALSE?

a. interior heating in the Jovian planets contribute to convection in 
the atmospheres

b. slow rotation rates lead to very strong coriolis forces

c. the circulation patterns tend to be in very elongated bands that 
encircle the planets

d. the circulation speeds increase towards the equator



23. The sizes of material comprising Saturn's rings are studied by

a. photographing the ring and studying the individual particles observed.

b. analysis of the spectrum.

c. analyzing how light is reflected by the ring particles.

d. analyzing the excess radiation emitted by the planet.



24. The chemical composition of Jupiter is most similar to that of

a. the Earth.

b. the Sun.

c. Mars.

d. the Moon.

e. Venus.



25. Saturn's density is

a. less than that of Jupiter.

b. about that of Jupiter.

c. similar to the Earth's.

d. greater than that of the Earth.



26. The Great Red Spot on Jupiter is caused by

a. volcanic activity below the cloud tops.

b. the interaction of the atmosphere with a tall mountain on the surface 
underneath the spot.

c. the infall of a large asteroid.

d. meteorological conditions in the atmosphere.

e. a region having a different chemical composition than the surrounding 
area.



27. The Galilean satellites consist of

a. rock.

b. ice.

c. a rock/ice mixture.

d. liquid nitrogen oceans.

e. gaseous materials.



28. Which of the Galilean satellites shows the oldest surface?

a. Io

b. Ganymede

c. Callisto

d. Europa

e. the surfaces are all the same age - the age of the solar system



29. Io is known to have a warm interior because

a. it has active volcanos.

b. it shows continental drift.

c. it has a hot atmosphere.

d. of its strong interaction with the solar wind.

e. of its strong magnetic field.



30. Which Saturnian satellite is known to have an atmosphere?

a. Tethys

b. Titan

c. Triton

d. Dione

e. Rhea



31. Which of the following support the idea that Saturn's rings are NOT 
solid?

a. they disappear when seen edge-on

b. stars generally can be seen through them

c. Doppler shift measurements show the rotation velocity to disagree 
with Kepler's third law

d. the rings are located outside the Roche limit

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4th test for physics Astromony that are not that hard but some are Sergio <invalid@invalid.com> - 2016-07-22 21:03 -0500

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