Open up your laptops, go to MrHyatt.rocks, and do today’s bellwork Scale Scale Description 4 Through independent work beyond what was taught in class, you could: investigate the location of seasonal constellations in the local sky. predict location of constellations at future times. determine the celestial equator, latitude and position of the Pole Star for a given position on the Earth. determine the distances of stars in a given constellation to each other and to Earth. 3 You will be able to: describe and apply the coordinate system used to locate objects in the sky. distinguish the various methods of measuring astronomical distances and apply each in appropriate situations. 2 determine the meaning of symbols, key terms, and other astronomy specific words and phrases as they are used in context to relevant topics label diagrams with degree measurements describe how or why different units of measurement are needed for distances in space 1 You will be able to list the different units of measurement needed to measure distances in space

After Bellwork, Please follow the link and read article Then answer the 2 questions in your science journal

Ways to Find the North Star 1. Use the “pointer stars” of the big dipper 2. Look due North, then at your latitude. Orlando coordinates: 28.1000° N, 81.6000° W 10° of sky = approximately 1 hand *Examples: In New York, Polaris is located 41 degrees above the northern horizon, which also corresponds to the latitude of New York. *At the North Pole, you would find Polaris overhead. *At the equator, Polaris would appear to sit right on the horizon. *If you travel to the north, the North Star climbs progressively higher the farther north you go. When you head south, the star drops lower and ultimately disappears once you cross the equator and head into the Southern Hemisphere.

Star Trails Above Mauna Kea, Hawai’i 19.8207° N, 155.4681° W

Petroglyphs and Star Trails in the Teimareh valley, located in the Zagros Mountains of central Iran 32.0000° N, 53.0000° E

Star trails and Nauset Lighthouse, Cape Cod, Massachussets 41.6800° N, 70.2000° W

Star trails in Juneau, Alaska Vallentuna sweeden

Figure 1.12

They have taken out the “dipper” stars They have taken out the “dipper” stars. See if you can determine which star is Polaris.

Question 1 Constellations appear to move across the sky at night because a) the Earth orbits the Sun. b) the Moon orbits the Earth. c) stars are in constant motion. d) the Sun orbits the Earth. e) the Earth spins on its axis. Answer: e

Question 1 Question 1 What motion is responsible for the apparent motion of the constellations (east to west) across the sky? 1) the motion of Earth around the Sun 2) the motion of the Moon around Earth 3) the motion of Mars around the Sun 4) the motion of the constellations around Earth 5) the spinning of Earth on its axis Constellations appear to move across the sky at night because a) the Earth orbits the Sun. b) the Moon orbits the Earth. c) stars are in constant motion. d) the Sun orbits the Earth. e) the Earth spins on its axis. The Sun, Moon, planets, and stars all appear to rise and set because our planet rotates once each day. Answer: e

Polaris wont always be our pole star… Gamma Cephei (also known as Errai, situated 45 light-years away) will become closer to the northern celestial pole than Polaris around 3000 CE. Iota Cephei will become the pole star some time around 5200 CE.

First-magnitude Deneb will be within 5° of the North Pole in 10,000 CE. Polaris will be our north star again in 27,800 CE, just like it was in 23,600 BC

Left Side… Make your own constellation. Glue the star chart into your science journal on the left side On the picture, outline the stars that form your constellation. Fill in and draw your constellation On the top of the page, write the name of your constellation. Underneath, write the 1 Paragraph story of the constellation.

Most constellations don’t look anything like their supposed picture

Many just have the stars inside the shape, not the outline.

Some do look roughly like their pictures

DON’T do a “connect the dots” picture. It shouldn’t be an outline! Like an actual constellation, put the stars on the inside in a rough shape and then sketch what the picture is supposed to look like. You have 15 minutes