Created 2 years ago
The movement of the earth and the reasons behind day, night, and the seasons.
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Slide 1 - Earth’s Rotation and Revolution
- Ms. McKinney
- 6th Grade Science
Slide 2 - Standards and Objectives
- VA: 6.8 The student will investigate and understand the organization of the solar system and the interactions among the various bodies that comprise it. Key concepts include:
- d) revolution and rotation;
- g) the relationship of Earth’s tilt and the seasons
Slide 3 - “What am I, the student, going to learn?”
- The students will be able to compare and contrast rotation and revolution and apply these terms to the relative movements of planets and their moons.
- Model and describe how earth’s axial tilt and its annual orbit around the sun cause the seasons.
- Model and describe how day and night occur.
Slide 4 - Log in to Socrative!
- Open the app and input your REAL name.
- Fake names will not be given a participation grade
- Log into my classroom:
- Ready, Set, Go!
Slide 5 - Socrative Poll
- What do I know about the movement on earth and other celestial bodies?
- Absolutely nothing
- A little but I could use a refresher course
- Enough where I can explain just a little bit
- Everything, quiz me now!
Slide 6 - Let’s get Started…
- Watch this video!
- That was a lot of information! But I promise to explain it more in depth!
Slide 7 - What exactly does rotation mean?
- Rotation is the act of spinning around an axis!
- Several things rotate!
- Figure Skaters
Slide 8 - Socrative Question
- True or False:
- Earth has a real axis that can be seen from space.
Slide 9 - So… what’s an axis?
- An axis can be any real or imaginary line that an object spins around
- Earth has an axis! But it is not real. Earth has an imaginary line that runs through its North and South Poles!
Slide 10 - Earth looks likes it’s leaning!
- That is because Earth is a little tilted! The axis of Earth is tilted at a 23.5 degree angle.
Slide 11 - How long does it take Earth to Rotate?
- A single rotation of earth takes 24 hours. (23 hours and 56 minutes to be exact.) This is what we on Earth call a full day!
Slide 12 - Socrative Question
- What do you think will happen if the earth stopped rotating?
- The earth will explode.
- The earth will freeze.
- Depending on where you live, the earth will be dark forever, or in daylight forever.
- There will be ½ year of darkness and ½ year of light no matter where you live.
Slide 13 - What's the big deal about Earth's Rotation?
- Earth's rotation causes day and night because of the different places that the Sun's light hits throughout the 24 hours. The side FACING the Sun is day, the side facing AWAY from the Sun is night.
Slide 14 - We know about the Earth, what about the Sun?
- Because of the rotation of Earth, it appears that the Sun rises in the east and sets in the west. But the sun is not moving at all!
Slide 15 - Socrative Question
- A year consists of 365 days.
Slide 16 - Now we know about Rotation, now what?
- The video also mentioned something called Revolution. This is when one object travels around another. The path that object takes is called an orbit
- Earth has an orbit around the Sun
- It takes Earth 365 days or one year to revolve around the Sun.
Slide 17 - Is the orbit a perfect circle?
- The orbit of earth is actually an ellipse, NOT a circle.
Slide 18 - Let’s Review!
- An AXIS is a real or imaginary line that an object ROTATES or spins around.
- The Earth is ROTATES on it’s axis and REVOLVES around the Sun.
- It takes 24 HOURS or 1 DAY to do one full rotation and 365 days or a YEAR to complete a revolution.
- The path that a revolving object takes is called an ORBIT.
- The orbit is not a perfect circle but an ELLIPSE.
Slide 19 - Let’s Take a Break!
- Using your BYOT device, from the Socrative App,
- Based on the information you just received, answer the following question:
- Why do YOU think seasons occur?
- Once you submit your answer:
- Discuss with your table-mates, why you think seasons occur
- Work together to form a single idea and wait for the rest of the responses.
- What are some of the ideas your group discussed?
- Did you all have the same idea?
Slide 20 - I bet some of your answers included:
- “Seasons are caused by how close the Earth is to the sun.”
- In fact, the Earth is closest to the sun around January 3 and farthest away from the sun around July 4.
Slide 21 - I bet some of your answers included:
- Here’s another video to help you out.
- Again, I will explain it for you more in depth afterwards!
Slide 22 - Why is rotation and revolution so important?!
- The combination of the tilt and the revolution of Earth causes the seasons.
- The tilt of the Earth causes light (rays) from the Sun to hit it at different angles!
- For example, in the summer, the Northern hemisphere receives longer exposer of rays than the southern, causing warmer weather.
Slide 23 - Wait, what is a hemisphere?
- The Earth is “split” into sections called hemispheres.
- Hemispheres are sectioned into North, South, East, and West.
- Determined by the prime meridian and the equator.
Slide 24 - Why do seasons occur?!
- To put it shortly, the hemisphere that receives more of the Sun’s rays will be warmer than the hemisphere that receives less.
- Days are longer in the summer season because the sun hits the area for longer periods of time.
Slide 25 - Guess what!!
- We are JUST about done!
- One more time with Socrative!
- Answer the quiz questions and please take your time!