Space Unit Exam Review S2023.pdf

SNC1W1 - Exam Review Space Unit Exam Review 1. Match the key terms from the word list with the following definitions or explanations. asteroid belt asteroid comet astronomical unit celestial objects galaxy light...

SNC1W1 - Exam Review Space Unit Exam Review 1. Match the key terms from the word list with the following definitions or explanations. asteroid belt asteroid comet astronomical unit celestial objects galaxy light year meteor meteoroid meteorite nebula nuclear fusion Oort cloud solar system star Universe Key Terms Definitions 1. Objects we can see in the sky that are not man-made. 2. The average distance between the Sun and Earth. 3. The distance that a beam of light can travel through space in one year. 4. The process in which the nuclei of atoms fuse together and form larger atoms, and an enormous amount of energy is released. 5. The Sun together with all the planets and celestial objects are held by the Sun’s gravitational attraction and orbit around it. 6. ​A hot ball of plasma, an electrically charged gas, that shines because nuclear fusion is taking place in its core. 7. A region of rocky debris that forms a ring all the way around the Sun at a distance of about 3 AU. 8. A celestial object made of ice and dust that orbit the Sun, and as it approaches the Sun, a gas tail and a dust tail will form. 9. A meteoroid that enters Earth’s atmosphere and begins to burn up as a result of friction. 10. A piece of metal or rock in the solar system that is smaller than an asteroid, and has no fixed path. 11. A piece of metal or rock that crashed to the Earth’s surface and created a crater. 12. A small celestial object in orbit around the Sun, especially in asteroid belt; it is smaller than a planet but larger than a meteoroid. 13. The most distant region of the Solar system that consists of billions of fragments of ice and dust, and a major source of comets. 14. Everything that physically exists: entirety of space and time, and all forms of matter and energy. 15. A collection of hundreds of billions of stars held together by gravity. 16. A large cloud of dust and gas. 1 SNC1W1 - Exam Review 2. Define a) astronomical unit b) light year 3. a) What is the Big Bang theory? b) State two areas of support for Big Bang Theory. 4. a) Describe the Solar Nebula Theory. b) List three supporting evidence of solar nebula theory. 5. The Sun - The distance from the Earth to the Sun is defined as __________________________________ - The sun produces energy by a process called ______________________________________ - Sunspot: _____________________________________________________________________ - Prominence: __________________________________________________________________ - Solar flare: ____________________________________________________________________ - Coronal mass ejection: __________________________________________________________ - Solar wind: ___________________________________________________________________ 6. Compare and contrast comets, asteroids, and meteoroids. Asteroids Meteoroids Comets Where are they originally formed from? What are they made of? Where are they originally located? How do they travel in the solar system? 2 SNC1W1 - Exam Review 7. Compare and contrast the inner planets and the outer planets in terms of their composition, size and shape, and position. The inner planets The Outer planets Composition Size & Shape Position 8. What is the difference between planets and dwarf planets? 9. Compare and contrast the following terms: meteoroid, meteor, and meteorite. 10. Draw a diagram illustrating the following phases of the Moon: a) new moon b) full moon 11. a) What is the difference between a lunar eclipse and a solar eclipse? b) Sketch and label a diagram to explain each eclipse. 3 SNC1W1 - Exam Review 12. Use a diagram to explain what generates tides on Earth. 13. What are the direct benefits of space research and exploration? 14. What are the spinoff (indirect) benefits of space research and exploration? 15. What are the costs of space research and exploration? 16. What are the issues in research and exploration? 17. a) What is microgravity? b) What are microgravity's effects on the human body? Multiple Choice: 1. In the Sun’s photosphere there are areas that are cooler and appear darker than the surrounding hot areas. There cool, darker areas are called: a) A solar prominence c) A solar flare e) A nebula b) A supernova d) A sun spot 2. Between Mars and Jupiter there is a ring of objects which are: a) Asteroids c) Meteoroids e) Meteorites b) Comets d) Meteors Short Answer: Other “space” objects can be sometimes confused. Answer the following that describes each object. a) An icy object that orbits the Sun is called a __________ b) A rocky object that forms an orbit between Mars and Jupiter __________ c) A streak of light from an object falling through the Earth’s atmosphere __________ d) A natural object that orbits a planet __________ e) An object that strikes the Earth’s after falling through the atmosphere __________ f) A collection of dust, gases and billions of stars __________ 4