1. Open up your laptops, go to MrHyatt.rocks, and do today’s bell work
Scale
Scale Description 4
Through independent work beyond what was taught in class, students could (examples include, but are not limited to):
research current and past earth and sun conditions.
investigate causes and possible solutions for global climate change.
compare and contrast the patterns in the organization and distribution of matter in the sun, earth, moon system.
compare and contrast different solar events and their impact on earth. 3
understand how the motions of the sun, stars and planets as observed from Earth relate to the motions of the Earth and other planets in space.
understand how the movement and position of Earth influences life on Earth.
be able to differentiate between astronomy and astrology. 2
determine the meaning of symbols, key terms, and other astronomy specific words and phrases relating to the Earth, Sun and Moon
illustrate the patterns of distribution of matter in the sun, earth, moon system.
list the physical properties of the Earth, Sun and Moon.
describe the key parts of the Earth, Sun and Moon System 1
show the patterns of distribution of matter in the sun, earth, moon system.
select from a list the physical properties of the sun, earth and moon.
list the key parts of the structure of earth, sun and moon.
Open up your laptops, go to MrHyatt.rocks, and do today’s bell work

2. If you were gone yesterday…
You need to make up a quiz.
You need to come before or after school to make it up

3. The rest of the day is for you to work on this
You will find it on Canvas
Due TOMORROW (Tuesday) at MIDNIGHT

4. What is a leap year and why do we have them?
Questions of the week
How long is a day?
How long is a month?
What is a leap year and why do we have them?

5. Solar vs. Sidereal Days

6. Make this in your science journal
Sidereal Day
Solar Day
Definition
Length (of time)
Sketch

7. Right Now! Turn to page 12 of this book Or page 114 of this book
Day
Right Now! Turn to page 12 of this book Or page 114 of this book
Sidereal Day. What is it? Draw a sketch
Solar Day. What is it? Draw a sketch
Day

8. 1.4 Earth’s Orbital Motion
Daily cycle, noon to noon, is a solar day
What our clocks use
24 hours
Stars aren’t in quite the same place 24 hours later, though, due to Earth’s rotation around Sun; when they are once again in the same place, one sidereal day has passed
What astronomers use
≈ 23 hours 56 minutes
Figure Caption: Solar and Sidereal Days. A sidereal day is Earth’s true rotation period—the time taken for our planet to return to the same orientation in space relative to the distant stars. A solar day is the time from one noon to the next. The difference in length between the two is easily explained once we understand that Earth revolves around the Sun at the same time as it rotates on its axis. Frames (a) and (b) are one sidereal day apart. During that time, Earth rotates exactly once on its axis and also moves a little in its solar orbit—approximately 1°. Consequently, between noon at point A on one day and noon at the same point the next day, Earth actually rotates through about 361° (frame c), and the solar day exceeds the sidereal day by about 4 minutes. Note that the diagrams are not drawn to scale; the true 1° angle is in reality much smaller than shown here.

10. Compare and Contrast Sidereal Day Solar Day Why is there a difference?1. 2. 3. 1. 2. 3. 1. 2. 3.
Why is there a difference?

11. Compare and Contrast Sidereal Day Solar Day Why is there a difference?
1. 23 hrs. 56 min
deg. turn
3. Astronomers
use this
Caused by
earth’s rotation
2. Both are useful
3. Both measured by
things in the sky
1. 24 hrs.
2. Sun in same spot
3. Clocks use this
Why is there a difference?
Because the earth revolves as it rotates, so it needs to turn a little bit more to get the sun in the same place

12. Due at Midnight TONIGHT
Work individually
So is this