Unit 5: Earth and Space

Question 1

a large, round object that revolves around a star and has cleared the region around its orbit

Answer 1

planet

Question 2

an imaginary line around which an object spins

Answer 2

axis

Question 3

one full orbit around the sun (it takes 365 days or 1 year)

Answer 3

revolution

Question 4

one whole spin of an object on its axis (it takes 24 hours or 1 day)

Answer 4

rotation

Question 5

an explosive eruption of waves and particles in space

Answer 5

solar flare

Question 6

the path an object takes as it revolves around a star, planet, or moon

Answer 6

orbit

Question 7

a group of stars that forms a pattern

Answer 7

constellation

Question 8

a natural object that revolves around a planet

Answer 8

moon

Question 9

a frozen mass of different types of ice and dust orbiting the sun

Answer 9

comet

Question 10

any of the four closest planets to the sun (terrestrial)

Answer 10

inner planet

Question 11

any of the four planets in our solar system beyond Mars (gaseous)

Answer 11

outer planet

Question 12

a large, round object that revolves around the sun but has not cleared the region around its orbit

Answer 12

dwarf planet

Question 13

a spacecraft that gathers data without a crew

Answer 13

space probe

Question 14

a rocky mass up to several hundred kilometers wide that revolves around the sun

Answer 14

asteroid