Presentation on theme: "Our Solar System S4E1. Students will compare and contrast the physical attributes of stars, star patterns, and planets. a. Recognize the physical attributes."— Presentation transcript:
1 Our Solar SystemS4E1. Students will compare and contrast the physical attributes of stars, star patterns, and planets.a. Recognize the physical attributes of stars in the night sky such as number, size, color and patterns.b. Compare the similarities and differences of planets to the stars in appearance, position, and number in the night sky.c. Explain why the pattern of stars in a constellation stays the same, but a planet can be seen in different locations at different times.d. Identify how technology is used to observe distant objects in the sky.S4E2. Students will model the position and motion of the earth in the solar system and will explain the role of relative position and motion in determining sequence of the phases of the moon.a. Explain the day/night cycle of the earth using a model.b. Explain the sequence of the phases of the moon.c. Demonstrate the revolution of the earth around the sun and the earth’s tilt to explain the seasonal changes.d. Demonstrate the relative size and order from the sun of the planets in the solar system.
2 How does the Earth and its Moon Move? The Earth rotates or spins on its axisIt takes 24 hours! That’s why we have day and nightIt also revolves or orbits around the sunA complete revolution takes about 1 year!
3 Seasons Do you know why we experience seasons? It’s because of the Earth’s tilt!
4 The Moon Why does the moon seem to change? The moon orbits Earth and it takes about 1 month!During its orbit, we see reflected light from the sun
5 Moon PhasesAs the moon revolves around Earth, we see different phases
7 Solar SystemA solar system is a group of objects in space that orbit a starObjects include: inner and outer planets, dwarf planets, moons, and asteroidsThe inner planets are closest to the sun:
8 Solar System The asteroid belt separates the inner and outer planets The outer planets (gas giants) are farthest from the sun
9 Inner and Outer Planets Bigger than inner planetsMade up of mostly gases and called the “gas giants”Many moonsRings made of dust ice, or rockInner PlanetsClosest to the sunRocky SurfacesSmaller than outer planetsNone has more than 2 moons
12 A star is a huge ball of super heated gases What is a Star?A star is a huge ball of super heated gases
13 Studying Stars Scientists study stars to learn about our solar system Scientists group stars using their similarities and differences
14 Star Color Rising temperature of a star means it is changing color Star color tells us how hot the star isThey can range from red, to orange-yellow, white, and to bluish white
15 Star ColorBlue Stars are the hottestRed Stars are the coolest
16 Star Brightness How Bright a star looks depends on How far it is from Earth
17 Star SizeDwarfs: Small up to 20 times larger than our sun and up to 20,000 times brighter. Our sun is a dwarf starGiants: Old and largeSuper giants: Older and largerVirtually non-existent: Used to be other stars but are slowly burning out
18 Our SunOur Sun is a star which is also the center of our solar system!It is the largest object in our solar systemWithout it no life on Earth could exist
19 Our Sun Made up of gases, mostly hydrogen and helium Is a medium sized yellow starIt has medium heat, brightness and size
20 Groups of StarsA Constellation is a group of stars that make an imaginary picture.A galaxy is a huge system of gases, dust, and stars.The universe is everything in space.