Earth Science, Tarbuck Chap 21

Question 1

Kepler Laws

Answer 1

1. Planets orbit around the sun in an ellipse.
2. Planet moves faster when closer to the Sun, equal areas in equal time
3. Distant planets orbit the sun at slower speeds compared to those closer

Question 2

What is a mean solar day

Answer 2

Time interval from noon on one day to noon on the next

Question 3

What is a sidereal day

Answer 3

time it takes for the Earth to make one 360 degree rotation with respect to a star appearing the same position

Question 4

What is parallax

Answer 4

the difference in the apparent position of an object against a distant background when observed from two distinct vantage points.

Question 5

What is Perihelion

Answer 5

When the earth is closest to the sun, happens in january

Question 6

What is aphelion

Answer 6

When the Earth is farthest away from the sun, happens in july

Question 7

What is the Synodic month

Answer 7

Apparent period of the Cycle of moon phases

Question 8

What is the sidereal month

Answer 8

True period of the cycle of moon phases

Question 9

Order the moon cycles

Answer 9

New, Crescent, First Quarter, Gibbous, Full, Gibbous, 3rd Quarter, Crescent, New