Lab Review: The Earth's Shape

Lab Review: The Earth's Shape

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Multiple Choice

What is earth's true shape?

• sphere

• oblate spheroid

• spherical obtuse

• circle

Open Ended

A perfect roundness ratio results in what number?

Multiple Choice

What formula is used to calculate the roundness ratio?

• polar diameter + equatorial diameter

• equatorial diameter + polar diameter

• equatorial diameter / polar diameter

• polar diameter / equatorial diameter

Multiple Choice

The polar and equatorial diameters are not equal - which is larger?

• polar

• equatorial

Multiple Choice

Which planet is the least round based on the data below?

• Earth's

  Roundness Ratio: 0.997

• Mars

  Roundness Ratio: 0.994

• Jupiter

  Roundness Ratio: 0.935

Multiple Choice

Which object would be represent Earth in terms of roundness and smoothness?

• Basketball

• Bowling Ball (before the holes are drilled)

• Golf Ball

• Pumpkin

  (with no stem)

Multiple Choice

A relief globe representing Planet X has a bump representing a mountain with a height of 0.26cm. The globe has a diameter of 698cm. If the actual Planet X has a diameter of 15,634km, how tall would the actual mountain be?

• 1.71 km

• 1.71 cm

• 5.72 km

• 5.72 cm

Multiple Choice

Where would you weigh more based on gravitational pull?

• Poles

• Equator