Sun, Earth, & Moon

Objective Warm-Up

O You will identify and explain the effects the sun has on the earth.

O Identify the seasons.O What is the same or

different about the seasons?

O What do you think causes the difference in seasons?

O What do you think causes the difference in what time it gets dark outside?

The Earth: O is the third planet from the

Sun,O is an elliptical sphereO rotates on its imaginary

axis counterclockwise every 24 hours or 1 day

O appears blue in space because it is 70% water

O revolves around the sun every 365 1/4 days or 1 year

What we breathe:

0

20

40

60

80

nitrogenoxygentrace

nitrogen 78

oxygen 21

trace 1

percen

O 78% nitrogenO 21% oxygenO 1% argon, neon,

carbon dioxide, neon, & krypton

Which one is the smallest?

Which one is the largest?OCan you put these in size order?OPlace the following in

order from largest to smallest.OMoonOSunOEarth

Answer: Sun, Earth, then moon

OThe sun is the largestONext in size is the Earth.OThe moon is smaller

than the Earth.

Which of these is the biggest?

OA The moonOB The EarthOC The sunOD Jupiter

Answer: “C” The sun

is the largest!Our sun is the only star in our solar system. The sun is also the largest heavenly body in our solar system.

The moon revolves around

A itselfB the EarthC the sunD the solar system

OThe moon revolves or orbits the Earth once every 29 days.

O We all ways see the same side of the moon because the moon rotates and revolves at about the same speed.

Earth Science Question: Rotation

O What is rotation? (define)

O The rotation of the Earth on its axis causes-A. daysB. monthsC. seasonsD. years

Rotation causes day & night.

ORotation is the turning or spinning of the Earth in one place on its imaginary axis.

ORotation of the earth on its axis causes day & night. (answer A).

Earth Science Question:

OWhich of these shows the location of a polar ice cap?

OWhich of these shows the location of the equator?

Polar Ice caps= A Equator= C

Which of these is caused by the turning

of the Earth?A. Summer and winterB. StarsC. Day and nightD. Moon phases

The turning of the Earth causes

“C” Day & Night

When the moon is seen from the Earth as a

whole circle, it is called a-

A. Crescent moonB. Full moonC. Half moonD. New moon

When the moon is seen from the Earth as a

whole circle, it is called a

FULL MOON.

Which of these is the next phase of the

moon?New Moon --- Waxing Crescent --- ?

A Full MoonB Waning CrescentC First QuarterD Waxing Gibbous

The next major phase of the moon would be…

“C” First quarter.Just think about it…ONew moon (can only get bigger = WAXING)OThen…First quarter OWANING Gibbous is nextOFinally…Full Moon.

OThen gets smaller…

The revolution of the Earth around the Sun

takes-

A a day & night or 12 hoursB a week or 7 daysC a month or 29-31 daysD a year or 365 ¼ days

The revolution of the Earth around the sun

O Takes 365 ¼ days or one year.

NOTE:O Due to the tilt of the

Earth’s axis during revolution, the Earth experiences seasons.

SeasonsHemisphere tilted toward the sun (direct)ODaylight hours are longer and the sun’s more direct causing more energy (HEAT = SUMMER)

Hemisphere tilted away from the sun (indirect)ODaylight hours are shorter and the sun LESS direct causing less energy (HEAT = WINTER)

SeasonsEquinox

O Sun is directly above equator

O Daylight hours = Nighttime hours

O Occurs in March and September

SolsticeO When the sun

reaches it’s greatest distance north or south from the equator

O Summer solstice – longest daylight hours (JUNE)

O Winter solstice - shortest daylight hours (December)

Closure: (15 minutes)O Brief Constructive Response

O Explain how the interaction between the sun and Earth affects seasons here on Earth, and what happens with the sun's rays during the different seasons. Encourage them to use vocabulary terms axis, tilt, direct sunlight, and indirect sunlight in their responses