Unit 4 Vocabulary

Question 1

apparent motion

Answer 1

something that looks like it’s moving

Question 2

direct sunlight

Answer 2

when the Sun shines directly on something, heating it up more, than if it shines at an angle

Question 3

season

Answer 3

a division of the year

Question 4

rotation

Answer 4

the spinning motion of the Earth on its tilted axis. Earth rotates 1 time every 24 hours.

Question 5

celestial body

Answer 5

a natural object that is located outside of the Earth’s atmosphere such as the moon, Sun, stars, and other planets

Question 6

axis

Answer 6

an imaginary straight line passing through the North Pole, the center of the Earth, and the South Pole. The Earth rotates on its axis.

Question 7

tilt

Answer 7

a slanted position

Question 8

revolution

Answer 8

the Earth’s orbit path around the Sun; Earth revolves about once every 365 days

Question 9

orbit

Answer 9

the path an object takes when it revolves around another object

Question 10

hemisphere

Answer 10

half of the Earth, usually divided into northern and southern halves by the equator

Question 11

poles

Answer 11

the places on Earth’s surface that Earth’s imaginary axis passes through

Question 12

equator

Answer 12

an imaginary line around the Earth that separates the northern and southern hemispheres

Question 13

moon phase

Answer 13

moon phases change as the moon orbits the Earth. As it orbits the Earth, we see different parts of the moon lit.

Question 14

shadow

Answer 14

a dark area or shape that is created when an object comes between rays of light and a surface