topic: earth, tilt, and the seasons september 6, 20ll

Topic: Earth, Tilt, and Topic: Earth, Tilt, and the Seasonsthe Seasons

September 6, 20llSeptember 6, 20ll

DO NOWDO NOW

Homework: review notesHomework: review notes In your notebook: What did you do over the In your notebook: What did you do over the

three day weekend? Was it fun? (if you didn’t three day weekend? Was it fun? (if you didn’t do anything tell me why you did nothing?)do anything tell me why you did nothing?)

KEEP WRITINGKEEP WRITING

Hemispheres Hemisphere Four of Hemispheres Hemisphere Four of Them In All!Them In All!

1. Definition1. Definition: A : A hemispherehemisphere is a half of a is a half of a sphere.sphere.

YOU WRITE: Hemisphere- half a sphere; northern and southern are separated by the equator

2. Northern and Southern 2. Northern and Southern HemispheresHemispheres

NORTHERNHEMISPHERE

SOUTHERNHEMISPHERE EQUATOR

3. The Earth’s tilt on its axis and its orbit around 3. The Earth’s tilt on its axis and its orbit around the Sun cause the Seasons.the Sun cause the Seasons.

YOU WRITE: Seasons- caused by earth tilt and orbit around sun

Tilting into the Summer!Tilting into the Summer!4. If the axis is tilted towards the Sun, then it is 4. If the axis is tilted towards the Sun, then it is

summer in that part of the world.summer in that part of the world.

SUNN

S

YOU WRITE: Summer- if the axis is pointed towards the sun

5. Quick Question5. Quick QuestionWhat season is it in the Southern Hemisphere?What season is it in the Southern Hemisphere?

N

S

SUN

6. Quick Question6. Quick QuestionWhat season is it in the Southern Hemisphere?What season is it in the Southern Hemisphere?

N

S

SUN

7. The amount of daylight during a day increases 7. The amount of daylight during a day increases as the Earth tilts more towards the Sun.as the Earth tilts more towards the Sun.

8. The Earths Tilt Affects 8. The Earths Tilt Affects ClimateClimate

The places closer to the Equator do not The places closer to the Equator do not experience much change in temperature or experience much change in temperature or light through out the year.light through out the year.

The places closest to the poles experience a The places closest to the poles experience a dramatic change in temperature and light dramatic change in temperature and light throughout the year.throughout the year.

YOU WRITE:

Places close to equator- not much change in temperature

Places close to poles- big change in temperature

9. Guided Practice9. Guided Practice

Name the two hemispheres that effect seasons.Name the two hemispheres that effect seasons. True or false. If it is winter in the northern True or false. If it is winter in the northern

hemisphere it is also winter in the southern hemisphere it is also winter in the southern hemisphere.hemisphere.

What season is it in the northern hemisphere What season is it in the northern hemisphere when this hemisphere tilted towards the sun?when this hemisphere tilted towards the sun?

True or false. The temperature and sunlight True or false. The temperature and sunlight changes the most throughout the year in the changes the most throughout the year in the places closest to the Equator places closest to the Equator

9. Guided Practice9. Guided Practice

If it is summer in Alaska (which is in the If it is summer in Alaska (which is in the northern hemisphere), what season is it in northern hemisphere), what season is it in Russia (which is in the northern hemisphere)?Russia (which is in the northern hemisphere)?

If it is summer in Greenland (which is in the If it is summer in Greenland (which is in the northern hemisphere), what reason is it in northern hemisphere), what reason is it in Australia (which is in the southern Australia (which is in the southern hemisphere)?hemisphere)?

10. Independent Practice10. Independent Practice 1. True or false. It is winter in the southern

hemisphere when the southern hemisphere is tilted towards the sun and receiving the most light.

2. Places that are farthest from the equator have harsh winters because A. the earth’s tilt causes them to receive a very small amount of light from the sun during the winter. B the earths tilt causes them to always receive a large amount of light from the sun. C. They are high in elevation. D. all of the above.

3. True or false. The Prime Meridian separates the northern and the southern hemisphere.

4. It is summer in South Africa. What season is it in Europe?

11. Exit Ticket11. Exit Ticket 1. True or false. It is summer in the northern

hemisphere when the northern hemisphere is titled towards the sun and receiving the most light.

2. Places that are close to the equator do not have harsh winters because A. the earths tilt causes them to always receive a small amount of light from the sun. B the earths tilt causes them to always receive a large amount of light from the sun. C. They are high in elevation. D. All of the above.

3. What line separates the northern and southern hemisphere?

4. It is winter in Canada. What season is it in Australia?