Earth's Axis of Rotation

Question 1

Earth’s orbit:

Answer 1

• 200 million miles in diameter
• 1 revolution equals 1 year
• 1 rotation equals 24 hours
• 23% angle and or tilt
• During January earth is closest to the sun (3 1/2 miles)

Question 2

Sun’s gravitational pull and a revolution:

Answer 2

• Causes earth to orbit the sun

- Earth moves Ina straight line in outer space

Question 3

Seasons:

Answer 3

• Patterns of temperature and weather that changes over the course of a year
• Near the equator the temperature is almost the same all year round

Question 4

Solstice:

Answer 4

• The area of sunlight is at maximum of sunlight in one hemisphere and a minimum in the other sphere
• December Solstice: Occurs when the poles lean as far away from the sun during the year. The North Pole is in complete darkness. The South Pole leans toward the sun and is in sunlight. North Pole in winter, and south in summer.
• June Solstice: Longest day of the year, first day of summer. North Pole leans toward the sun and is in sunlight. Beginning of summer in the north hemisphere and winter in the souther hemisphere.

Question 5

Equinoxes:

Answer 5

September Equinox: Sunlight is equal on the 2 spheres. Beginning of fall in the northern hemisphere and spring in the south.
March Equinox: Half of each hemisphere is in sunlight. Sunlight is center on the equator. Poles are again at the border between night and day.

Question 6

How seasons change:

Answer 6

• Seasons change as sunlight shifts between the hemispheres.
• We notice this by the angle of sunlight and length of day.
• The angle of sunlight strikes the group at a greater right angle.
• Sun low in the sky hits the ground at a slant.
• Long shadows less warmth. Summer vs winter.

Question 7

Earth’s axis of rotation:

Answer 7

• Earth Rotates around an imaginary line going through the center of the planet
• Half of planet is in light half is in darkness
• Rotates every 24 hours

Question 8

Sunlight:

Answer 8

• Summer: we have sunlight from 6:00 AM TILL 9:00 PM
• Winter: we have sunlight from 7:49 AM till 5:15 PM
• The farther from the equator the more extreme the change in day length is
• Poles summer days last 24 hours. Winter nights 24 hours
• KC increase of 7 hours of sunlight from winter to summer

Question 9

Hight tides & Low tides:

Answer 9

• Moonlight is actually light from the sun being reflected by the moon’s surface
• Tides are caused by the moon’s gravitational pull
• Moon’s gravity changes shape of Earth’s oceans
• Moon pulls different amount of force
  
  • Pulls hardest on the side of Earth nearest it, and less hard on the center of Earth, and even less hardest side of earth
• This coaxes the different ocean’s tide to rise and fall

Question 10

High Tide:

Answer 10

• The average water level rises slowly for about 6 hours

- 2 high tides on 24 hours

Question 11

Low Tide:

Answer 11

• The water level drops for about 8 hours

- 2 low tides in 24 hours

Question 12

Neap Tides:

Answer 12

• Occur at the 1st and 3rd quarter
• High tides are lower
• Low tides are higher

Question 13

Spring tides:

Answer 13

• During full and new moon
• Higher, high tides
• Lower, low tides