Lab Review: The Earth's Shape and Size

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

• 5.82 km

• 5.82 cm

Multiple Choice

Where would you weigh more based on gravitational pull?

• Poles

• Equator

Multiple Choice

What is the name of the ancient Greek scholar who accurately calculated the Earth's circumference?

• Plato

• Eratosthenes

• Aristotle

• Socrates

Multiple Choice

Why is Eratosthenes' measurement of the Earth's circumference considered a significant achievement?

• It was the first measurement of the Earth's weight.

• It was not considered significant by other scientists.

• It was the first accurate calculation of the Earth's size.

• It was based on inaccurate data.

Multiple Choice

How did Eratosthenes calculate the Earth's circumference?

• By measuring the depth of the ocean at different points and using the average depth

• By counting the number of stars in the sky and using the average distance between them

• By measuring the angle of the shadow cast by a stick at noon in two different cities and using the distance between the cities.

• By observing the speed of the wind and using the average wind speed

Multiple Choice

What is the modern-day equivalent of Eratosthenes' measurement of the Earth's circumference?

• Measuring with a ruler and a protractor

• Using a compass and a map

• Guessing based on the size of the moon

• Satellite technology and advanced geodesy techniques