Rotation, Revolution, and Seasons Rotation, Revolution, and Seasons 159 Rotation, Revolution, and Seasons Rotation, Revolution, and Seasons 160 2/8/2016 2/8/2016 EQ: What accounts for day and night, seasons, months, and tides? Application: Ws Connection: Describe what you would observe if you were able to watch the sun and moon rise and set over a period on months. Would they always rise and set the same way?? Exit : Discuss and describe a way that you could model rotation and revolution to an elementary student Starter: How do you think the Earth and Sun affect the seasons and day and night? Practice : notes Edusmart Write 3 things you learned 1. 2. 3.

1 Starter 2. Notes 3. Activity 4. Exit February 8, 2016 AGENDA Objectives 8.7 A Students will model and illustrate how the tilted Earth rotates on its axis, causing day and night, and revolves around the Sun causing changes in seasons by reading, writing, and talking while completing notes and a rotation/revolution and seasons activity.

Table of Contents 1/27 Wind, Climate, and Ocean Currents 147-148 Date Lecture/ Activity/ Lab Page 1/27 Wind, Climate, and Ocean Currents 147-148 1/26 Convection and Ocean Currents 149-150 1/29 Fronts and Air Masses 151-152 2/1 Pressure and Atmospheric Movement 153-154 2/2 Severe Weather and Precipitation 155-156 2/3 Reading Weather Maps 157-158 2/8 Rotation, Revolution, and seasons 159-160

The Earth in Space… a. The Earth rotates around an axis. Pract ice The Earth in Space… a. The Earth rotates around an axis. b. The rotational axis is tilted to 23.5°. c. The Earth revolves around the Sun.

Rotation… a. The Earth rotates on its axis once every 24 hours. b. The direction of rotation direction is counterclockwise (west to east) if you are viewing Earth from above the North Pole.

Rotation… c. Earth’s rotation results in… day and night sunrise and sunset. Movement of stars

Revolution… a. The Earth revolves around the Sun once every 365.25 days, which is equal to 1 year on Earth.

Revolution… b. The path around the Sun, or orbit, is not a circle. The shortest distance between the Earth and Sun is about 147,000,000 km and occurs in January. The furthest distance between the Earth and Sun is about 152,000,000 km and occurs in July.

Revolution… c. The average distance from the Earth to the Sun is called an astronomical unit (AU). This is about 150,000,000 kilometers.

Reasons for the Seasons… a. The 23.5°tilt of the Earth on its axis.

Reasons for the Seasons… b. The hemisphere tilted toward the Sun receives more direct radiation. This season is summer.

Reasons for the Seasons… c. The hemisphere tilted away from the Sun receives less radiant energy. This season is winter.

Points in Earth’s orbit around the Sun… a. June 21, 22: Summer Solstice The Sun reaches its highest point in the sky. The length of daylight hours are the longest.

Points in Earth’s orbit around the Sun… b. December 21, 22: Winter Solstice The Sun reaches its lowest point in the sky. The length of daylight hours are the shortest.

c. March 21-23 Spring Equinox and September 21-23 Fall Equinox Earth is not tilted toward or away from the Sun. Each hemisphere receives similar amounts of radiant energy. The length of daylight and nighttime hours are equal.

Rotation, Revolution, and Seasons Rotation, Revolution, and Seasons 159 Rotation, Revolution, and Seasons Rotation, Revolution, and Seasons 160 2/8/2016 2/8/2016 EQ: What accounts for day and night, seasons, months, and tides? Application: Ws Connection: Describe what you would observe if you were able to watch the sun and moon rise and set over a period on months. Would they always rise and set the same way?? Exit : Discuss and describe a way that you could model rotation and revolution to an elementary student Starter: How do you think the Earth and Sun affect the seasons and day and night? Practice : notes Edusmart Write 3 things you learned 1. 2. 3.