Ptolemy improvements were important because they explained

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Reference no: EM132918381

Question 1.

Ptolemy improved the geocentric model by ...

sadding epicycles and deferents

adding crystalline spheres

moving the Sun to the center

changing the circles to ellipses

Question 2

What is the angular diameter (in arcseconds) of an object that has a linear diameter of 75 cm and a distance of 2 km?

Question 3

Which ancient astronomer measured the radius of the Earth?

Aristarchus

Eratosthenes

Aristotle

Pythagoras

Question 4

According to the small angle equation, if an object at a fixed distance is suddenly shrunk to a smaller size, then the angular size will ...

stay the same

decrease

there's not enough information to say for sure

increase

Question 5

Ptolemy's improvements were important because they explained ...

lunar eclipses

retrograde motion

solar eclipses

the motion of the Sun in the sky

Question 6

Copernicus' heliocentric model was able to predict the location of the planets more accurately than Ptolemy's geocentric model.

True

False

Question 7

If the Earth were flat, then the shadows of two towers at two different places on the Earth would ...

be different lengths with the one further South being longer

be different lengths with the one further East being longer

be different lengths with the one further North being longer

be the exact same length

Question 8

If it takes a planet 1.2 years to orbit the Sun, how long (in years) will it take the planet to go all the way around our sky once?

Question 9

One of the main objections to the heliocentric model was that ...

we do not feel the Earth moving

it put some planets closer to the sun and Earth farther away

it was more complex than the geocentric model

it did not explain retrograde motion

Question 10

Copernicus was the first to be able to prove that the Earth orbited around the Sun.

True

False

Question 11

In Ptolemy's model, it is possible to have a planetary orbit without retrograde motion.

True

False

Question 12

If it takes a planet 5 years to orbit the Sun, how long (in years) will it take the planet to go all the way around our sky once?

Question 13

What is the angular diameter (in arcseconds) of an object that has a linear diameter of 5 meters and a distance of 3 km?

Question 14

What is the linear diameter (in meters) of an object that has an angular diameter of 22 arcseconds and a distance of 1,400 m?

Question 15

What is the linear diameter (in meters) of an object that has an angular diameter of 110 arcseconds and a distance of 25,000 m?

Reference no: EM132918381

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