Draft:Enceladus/Quiz

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on November 6, 2011. Credit: NASA/JPL-Caltech/Space Science Institute Cassini.

Enceladus is a lecture about a spheroidal astronomical object in orbit around Saturn.

This is a quiz based on the lecture.

Your are free to take this quiz at any time.

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Take the quiz as often as needed to improve your score, increase your familiarity with the subject, and improve your test-taking skills.

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Quiz

Point added for a correct answer:
Points for an incorrect answer:
Ignore the questions' coefficients:

1 Yes or No, With a diameter only slightly more than 300 miles, Enceladus just doesn’t have the bulk needed for its interior to stay warm enough to maintain liquid water underground.

	Yes
	No

2 Complete the text:

Match up the blue object with the possibilities below:

Sun - H

Mercury - I

Venus - J

Earth - K

Meteorite on Mars - L

Pallas - M

Comet Holmes - N

Europa - O

Io - P

Saturn - Q

Enceladus - R

Tethys - S

Titan - T

Neptune - U

Abell 370 - V

SN 1987A - W

Crab Nebula - X

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3 Yes or No, Enceladus is not completely spherical, so as it moves in its orbit, the pull of Saturn's gravity generates a net torque that forces the moon to wobble.

	Yes
	No

4 True or False, A plume of water ice particles emanating from Enceladus is reaching altitudes as high as 400 km above the surface.

	TRUE
	FALSE

5 Yes or No, Enceladus' orbit is kept oval-shaped, maintaining the tidal stress, because of the gravitational tug from a neighboring larger moon Dione. Dione is farther away from Saturn than Enceladus, so it takes longer to complete its orbit. For every orbit Dione completes, Enceladus finishes two orbits, producing a regular alignment that pulls Enceladus' orbit into an oval shape.

	Yes
	No

6 Complete the text:

Match up the letter of the spherical object with each of the possibilities below:

Sun - A

Mercury - B

Venus - C

Earth - D

Moon - E

Mars - F

Ceres - G

Jupiter - H

Callisto - I

Europa - J

Ganymede - K

Io - L

Enceladus - M

Titan - N

Uranus - O

Titania - P

Neptune - Q

Triton - R

Pluto - S

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7 Yes or No, Scientists estimate from the Cassini data that the south polar heating is equivalent to a continuous release of about 13 billion watts of energy.

	Yes
	No

8 Which of the following are associated with hydrocarbons?

	liquid lakes on Titan
	petroleum deposits on Earth
	methane in the atmosphere of Uranus
	Enceladus
	atmosphere of Neptune
	an H II region

9 Yes or No, To explain this mysterious warmth, some scientists invoke radiation coupled with tidal heating.

	Yes
	No

10 A fine spray of small, icy particles detected in green light is emanating from what surrounding, warm, geologically unique province of Enceladus?

Hypotheses

Main article: Hypotheses

1. Enceladus has a frozen surface because it traveled with Saturn from its original or earlier position.

See also

• Saturn/Quiz

External links

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