Access Prior KnowledgeLesson 1: In what ways does Earth move?

Opening ActivityOpen Science textbook to page 542.Open Science folder to review vocabulary words and outline for the chapter.Open Science journal and answer the following question:

 1. Compare the size of the Sun to Earth and other stars?

Review Content Cards and Q-Cards in bin, sharing with partners quizzing each other quietly.Log in to clickers using student ID number.Be ready to review home learning when timer goes off.

Don't forget to write your home learning in your agenda page 170A.

1 Planets travel in orbits around the Sun.

Yes

No

Do you agree with the statement?

2 One orbit is called a rotation.

Yes

No

Do you agree with the statement?

3 When one part of Earth faces toward the Sun,it is daytime.

Yes

No

Do you agree with the statement?

4 Distance from the Sun causes Earth’s seasons.

Yes

No

Do you agree with the statement?

Earth's Orbit

The Sun, planets, moons, asteroids, and comets make up the solar system.

Each planet moves in a path around the Sun, called an orbit.  -Gravity keeps the planets in their orbits traveling in an elliptical shape,  or flattened circle.

One complete orbit around the Sun is called a revolution, which takes about 365 days, one year.  -The Moon revolves around Earth and takes about 28 days, which is  about a month.

pg. 5432nd paragraph

Day and Night

Earth, like all planets, spins which causes part of Earth to face the Sun (day time) and soon that same part of Earth faces away from the Sun (night time).

Earth spins on an axis (imaginary center line).  -One complete spin on its axis is called a rotation and takes about 24  hours, or one day.

pg. 5442nd paragraph

Earth's Comfortable Temperature

Earth rotates quickly that it helps keep the temperature we need in order to live.

Earth would have hotter days and colder nights if it rotated more slowly.

Earth is also unlike other planets in that it has an atmosphere, which reflects some of the Sun’s rays, keeping Earth from getting too hot.  -The atmosphere also traps some of the  Sun’s rays, keeping Earth from getting  too cold.

pg. 5451st paragraph

The Pattern of SeasonsEarth always tilts the same way as it orbits the Sun causing different parts of Earth to face the Sun during different seasons.  -This means the number of daylight  hours change during the year, there  are more daylight hours in summer  and fewer daylight hours in winter.

Earth’s tilt also causes light from the Sun to hit parts of Earth at different angles creating its climate due to the amount of sunlight an area receives.

The equator receives the most direct sunlight and the Sun’s rays are more spread out when they hit the poles.  -This tilt of Earth’s on its axis causes  the poles to have a colder climate  than the equator.

pg. 5462nd paragraph

Earth's Seasons

There are four seasons in the Northern and Southern Hemispheres: spring, summer, fall, and winter. -If it is summer in the Northern Hemisphere, it is winter in the Southern  Hemisphere.

The North Pole is closest to the Sun on the first day of summer; likewise the South Pole is closest to the Sun on the first day of winter.

Seasons

Spring Autumn WinterSummer

MatchQuest

TextQuest

Answer questions in your Science Journal.

1. Why is the North and South poles so cold throughout the year?

2. A rotation of the Earth takes how long? A revolution?

3. How is it possible to have summer in the Northern Hemisphere and winter in the Southern Hemisphere at the same time?

4. Describe how the suns rays are hitting the Earth during summer in the Northern Hemisphere?

Don't forget to write your home learning in your agenda page 170A.