Welcome to Science 2/13

Take out your 6 note cards that you made on Friday.

Today’s Schedule

1. Schedule for the week

2. Question of the Day

3. Earth, moon, sun Part 1

4. Interactive Activity

Schedule for the Week

• Today- The Seasons

• Tuesday- Moon Phases

• Wednesday- Eclipses

• Thursday- Mrs. Pietrocini

• Friday-Projects & Presentations

Question of the Day• At which diagram will Ohio experience the

season of Summer?

The Earth Moon SunRelationship Part 1

How are the sun, moon, and Earth related?

By their movements.

• 1. Rotation- the spinning of Earth on its axis• 2. Revolution- the movement of the Earth &

moon around the sun. the movement of the moon around Earth Explore a model of Earth's daily rotation. Explore a model of Earth's yearly revolution around the sun.

 

Spring Summer Fall Winter

The Seasons of EarthQ. Why does Earth have different seasons?

• A. Earth has different seasons because its axis is tilted as it revolves around the sun.

• Earth’s axis is always tilted at 23.5 degrees.

• Seasons_Interactive.swfEarth-Sun Relations

Solstice• Twice each year the sun reaches its greatest

distance north or south of the equator.

• Summer solstice- the day when the sun is farthest north of the equator. June 21

• Winter solstice- the day when the sun is farthest south of the equator. December 21

Equinox

• Halfway between the solstices. Twice a year. Means “equal night” 12 hours of day 12 hours of night

• Vernal equinox- start of spring. March 21

• Autumnal equinox- start of fall. Sept. 21

The Midnight Sun or Noon Moon• What do you think happens at the poles during

the solstices?

• Areas around the poles experience 24 hours of daylight during the summer months.

• http://science.sbcc. Seasons_Interactive.swf

Skills Lab• Earth experiences changing seasons because of the

tilt of Earth’s axis and its revolution. • Objective: Create a model using clay that represents

the relationship between the Earth, sun, and the changing seasons.

• Procedure:• 1. Chose 1 color and create a model of the sun.

Remember: The sun is much larger than Earth.• 2. a. Use the 2nd color and create 4 models of Earth b. Take the skewers and insert them through the Earth’s so that Earth’s axis is tilted roughly at 23°• 3. Create a model in which the Earths circle the sun

and are in the proper position according to the seasons.