30.1 Vocab

Question 1

geocentric model

Answer 1

a model of the solar system in which Earth is considered the center and everything revolves around it

Question 2

heliocentric model

Answer 2

a model of the solar system in which the moon revolves around earth and earth and the other planets revolve around the sun

Question 3

extrasolar planet

Answer 3

planets that orbit around other stars (not the sun)

Question 4

who developed the geocentric model?

Answer 4

Ptolemy

Question 5

who came up with the heliocentric model?

Answer 5

Nicholas Copernicus

Question 6

who discovered evidence to support Copernicus’ model by using a telescope?

Answer 6

Galileo Galilei

Question 7

who discovered that the planets move in an ellipse?

Answer 7

Johannes Kepler

Question 8

do planets travel at different speeds in their orbits?

Answer 8

yes

Question 9

astronomical unit

Answer 9

the average distance from the earth to the sun (about 150 million km)

Question 10

planets that are similar in size to earth

Answer 10

terrestrial planets

Question 11

giant planets

Answer 11

jovian planets

Question 12

which planets are terrestrial?

Answer 12

earth, mercury, venus & mars

Question 13

which planets are jovian?

Answer 13

jupiter, saturn, neptune & uranus

Question 14

what are the planets between the sun and the asteroid belt called?

Answer 14

inner planets

Question 15

which planets are inner planets?

Answer 15

mars, venus, mercury & earth

Question 16

what are the planets beyond the asteroid belt called?

Answer 16

outer planets

Question 17

which planets are outer planets?

Answer 17

jupiter, saturn, uranus & neptune

Question 18

what are the planets between the sun and earth’s orbit?

Answer 18

inferior planets

Question 19

which planets are inferior?

Answer 19

mercury & venus

Question 20

what are planets beyond earth’s orbit known as?

Answer 20

superior planets

Question 21

which planets are superior?

Answer 21

mars, jupiter, saturn, uranus & neptune