5th Grade Solar System Quiz Study Guide
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[Pages:2]5th Grade Solar System Quiz Study Guide
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Important Vocabulary: 1. Revolution: a single journey around an orbital path 2. Solar system: a group of objects in space that orbits a star 3. Planet: a very large object that orbits a star 4. Dwarf Planet: a nearly round object that orbits a star, is smaller than a planet, and is not a satellite of another object 5. Asteroids: an irregularly shaped rock that orbits the sun 6. Comets: a space object made of ice and dust that orbits a star and develops a long bright tail as it nears its star 7. Gravity: the force that pulls all objects towards each other 8. Gravitational Pull: when gravity attracts two objects together
Important Information: 1. It takes the Earth 365 ? days or a year to orbit the Sun. 2. The amount of time it takes a planet to orbit the Sun is equal to a year. The length of a year is different for every planet because of a planet's distance from the Sun. The further away the planet. The longer it takes the planet to orbit the Sun. 3. Mars and Jupiter are separated by an asteroid belt. 4. Pluto, Ceres, and Eris are dwarf planets. 5. The planets and moons orbit the Sun because of the Sun's gravitational pull. 6. Earth orbiting the Sun is an example of revolution. 7. A comet is a ball of ice and dust that produces a long tail as it nears a star. 8. The shape of planetary orbits is called an ellipse. 9. Name the planets and planetary objects in order starting with the planet closest to the Sun.
Remember: My Very Eager Mother Just Served Us Nachos
Dwarf Planet (Pluto)
Short answer Questions:
1. You want to make an accurate model of the solar system that will fit in your classroom for a
school science project.
a. Explain why this will be difficult to do. This will be difficult because the solar system is just too vast and big. It would require too much space and wouldn't fit in the classroom.
b. How will you solve this problem? You solve this problem by creating a scale model. You have to convert the millions of miles into small units of measure (inches or centimeters) to create the model.
2. Explain how planets stay in orbit around the Sun rather than crash into it or fly off into space. Planets stay in orbit around the Sun because of the Sun's gravitational pull. Gravity pulls the planets around the Sun. The speed at which planets travel keeps them from crashing into the Sun.
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