Ch29 Vocab

Question 0

Ellipse

Answer 0

Elongated, closed curve with 2 foci; shape of earth’s orbit around the sun

Question 1

Sphere

Answer 1

Three dimensional, round object whose surface is the same distance from the center in every direction

Question 2

Time Zone

Answer 2

Any one of 24 longitudinal strips on earth about 15 degrees wide on earths surface in which local time is the same

Question 3

Rotation

Answer 3

Spinning of earth on its axis, used to measure time in days

Question 4

Revolution

Answer 4

Motion of the earth around the sun, used to measure time in years

Question 5

Ecliptic

Answer 5

Path of earths orbit around the sun, from earth, seen as the path that the sun travels across the zodiac

Question 6

Solstice

Answer 6

Occurs twice a year, in June and in September, when earths oration tal axis is tilted the most towards or most away; from the sun

Question 7

Equinox

Answer 7

Occurs twice a year, in march and in September when earths rotational axis is perpendicular to a line connecting the center of the earth to the center of the sun

Question 8

Tide

Answer 8

The periodic rise and fall of sea level caused by the gravitational attraction among earth, moon,and sun

Question 9

Moon Phase

Answer 9

Changing appearance of the moon as viewed from earth , depending on the relative positions of the sun, the moon, and the earth

Question 10

Solar Eclipse

Answer 10

Occurs during the new moon, when earth enters the moons umbra and casts a shadow on the earths surface

Question 11

Lunar Eclipse

Answer 11

Occurs during full moon when the moon enters the earths umbra and earth casts a curved shadow on the moons surface

Question 12

Maria

Answer 12

Relatively flat, dark colored regions on the moons surface

Question 13

Regolith

Answer 13

Layer of debris on the moons surface formed by the accumulation of meteoric material