unit 2 set 1

Question 1

axis

Answer 1

An imaginary line that passes through Earth’s center and North and South poles, about which Earth rotates.

Question 2

rotation

Answer 2

The spinning motion of a planet about its axis.

Question 3

orbit

Answer 3

The path of an object as it revolves around another object in space.

Question 4

phase

Answer 4

One of the different shapes of the moon as seen from the earth.

Question 5

new moon

Answer 5

The phase of the moon occurring when it passes between the earth and the sun and is invisible or visible only as a narrow crescent at sunset.

Question 6

full moon

Answer 6

The moon when it is visible as a fully illuminated disk.

Question 7

first quarter moon

Answer 7

The phase of the moon which is most easily spotted by the casual observer. You see the moon in this phase in the south as the Sun sets.

Question 8

third quarter moon

Answer 8

Three weeks after the new moon, we again can see half of the illuminated part. This is usually called third quarter, or last quarter moon.

Question 9

waning crescent

Answer 9

A crescent moon moving towards a new moon.

Question 10

waxing crescent

Answer 10

A crescent moon moving towards a full moon.

Question 11

revolution

Answer 11

The movement of an object around another object.

Question 12

waning gibbous

Answer 12

More than half, but less than fully illuminated, and moving towards a new moon.

Question 13

waxing gibbous

Answer 13

More than half, but less than fully illuminated, and moving towards a full moon.