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

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

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

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?

Solar vs. Sidereal Days

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

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

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 1-13. 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.

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?

Compare and Contrast Sidereal Day Solar Day Why is there a difference? 1. 23 hrs. 56 min 2. 360 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

Due at Midnight TONIGHT Work individually So is this