Orbits And Eccentricity Question Preview (ID: 56737)

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According to Kepler's Harmonic Law of Planetary Motion, the farther a planet is located from the Sun, the

a) shorter its period of rotation

b) shorter its period of revolution

c) longer its period of rotation

d) longer its period of revolution

Which planet has the most eccentric orbit?

a) Venus

b) Mars

c) Saturn

d) Pluto

Which graph best represents the change in gravitational attraction between the Sun and a comet as the distance between them increases?

a) A

b) B

c) C

d) D

Which statement provides the best evidence that Earth revolves around the Sun?

a) The Sun follows an apparent daily path, rising in the east and setting in the west.

b) A Foucault pendulum appears to shift its direction of swing in a predictable manner.

c) The stars appear to follow circular paths around the North Star (Polaris).

d) The seasons of spring, summer, fall, and winter repeat in a pattern.

What is the approximate eccentricity of this elliptical orbit?

a) 0.3

b) 0.5

c) 0.7

d) 1.4

Which observation is a direct result of changes in distance between Earth and the Sun?

a) A Foucault pendulum shows predictable changes in its direction of swing.

b) The apparent diameter of the Sun shows predictable changes in size.

c) The length of daylight at the poles changes from 0 to 24 hours during the year.

d) Summer occurs in the Northern Hemisphere at the same time that winter occurs in the Southern Hemisphere.

At which location is the planet's orbital velocity greatest?

a) A

b) B

c) C

d) D

The modern heliocentric model of planetary motion states that the planets travel around

a) the Sun in slightly elliptical orbits

b) the Sun in circular orbits

c) Earth in slightly elliptical orbits

d) Earth in circular orbits

Earth’s orbital velocity is slowest on July 5 because

a) the Moon is closest to Earth

b) Earth’s distance from the Sun is greatest

c) Earth, the Moon, and the Sun are located along a straight line in space

d) the highest maximum temperatures occur in the Northern Hemisphere

Which graph best shows the general relationship between a planet's distance from the Sun and the Sun's gravitational attraction to the planet?

a) A

b) B

c) C

d) D

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