Chapters 2 pt 2

Question 1

SUB-SOLAR POINT

Answer 1

place on Earth at which the Sun is “directly” overhead (perpendicular, at a 90° angle)

Question 2

EQUINOX

Answer 2

The time or date (twice each year) at which the sun crosses the equator

• when day and night are of equal length
• Spring (vernal )Equinox: March 20-21
• Fall Equinox (Septemper 22-23)

Question 3

DAY-LENGTH

Answer 3

duration of exposure to insolation

Question 4

Sun’s Declination

Answer 4

The latitude of the sub-solar point

• 47° of latitude, between the tropic of capricorn and the tropic of cancer)

Question 5

The equator always receives equal hours of day and night? TRUE OR FALSE?

Answer 5

TRUE

Question 6

SEASONALITY

Answer 6

seasonal variation caused by:

• Sun’s position above the horizon
• changing day length throughout the year

Question 7

SEASONAL VARIATION RESULTS FROM EARTH’S PHYSICAL CHARACTERISTICS

Answer 7

FIVE characteristics.

• Revolution
• Rotation
• Tilt
• Axial Parallelism
• Sphericity

Question 8

SEASONAL VARIATION RESULTS FROM THE SUN’S

Answer 8

• altitude, declination, day length