Rotate or Revolve? GLE 0607.6.3 Explain how the positional relationships among the earth, moon, and sun control the length of the day, lunar cycle, and year.

TNReady Practice Question

Answer The correct answer is B. The lunar cycle. Lunar = Moon

Lesson Objective At the end of the lesson you will understand the difference between rotate and revolve.

Question to Ponder How does the Earth move?

Directions Whenever you see this image, write the text in your science notebook.

Definitions Rotate- to spin Revolve- to go around another object or orbit

Pair Share If you are an odd number (1,3,5) you will go first and tell your partner what it means to rotate. If you are an even number (2,4,6) you will listen until your partner has finished, then you will share what it means to revolve.

Check for Understanding Synonyms Match 2 words together Rotate Revolve Orbit Spin

Answers Synonyms Rotate and Spin Revolve and Orbit

Rotate Think of the Earth rotating like a... A child’s toy – A spinning top

Rotate The Earth spins or rotates on its axis Tilted at 23.5 Degrees

How Fast? One rotation takes 24hrs

What happens when the Earth rotates? What is the Result? What happens when the Earth rotates? http://www.learner.org/jnorth/images/graphics/mclass/SunlightAnimation_Day.gif

Check for Understanding A complete rotation of the Earth results in _________________________.

Answer A complete rotation of the Earth results in day and night (24hrs).

Think of the Earth revolving like... Going around another object Revolve Think of the Earth revolving like... Going around another object A Traffic Round About https://www.youtube.com/watch?v=iAgX6qlJEMc

Revolve The Earth revolves around its star.

How Fast? Earth revolves around the sun in 365 days, 5 hours, 59 minutes and 16 seconds The moon revolves around the Earth in 27.3 days

What is the Result? What happens when the Earth revolves around the Sun? What about the moon revolving around the Earth?

Check for Understanding A complete revolution of the Earth around the Sun results in _____________. A complete revolution of the Moon around the Earth results in _______________.

Answers A complete revolution of the Earth around the Sun results in a year (365 days). A complete revolution of the Moon around the Earth results in a month (28 days).

What objects revolve in space? Satellites revolve around the Earth (GPS) Space station revolves around the Earth Moons revolve around their planets Planets revolve around their star The four gas planets have rings that revolve around them

Lesson Summary What is the definition of rotate? Give an example of an object that rotates What is the effect of the Earth rotating? What is the definition of revolve? Give an example of an object that revolves What is the effect of the Earth revolving?

Question to Ponder How does the Earth move?

Lesson Assessment Put notes away. Pencil only needed. Label your slip of paper with your name, date, and block. Label each statement as Rotate or Revolve