Standard 2: Students will understand how Earth s tilt on its axis changes the length of daylight and creates the seasons.

Transcription

1 Name Grade 6 Standard 2: Students will understand how Earth s tilt on its axis changes the length of daylight and creates the seasons. Objective 1: Describe the relationship between the tilt of Earth's axis and its yearly orbit around the sun. 1. Which statement is true about the tilt of Earth s axis in the Northern Hemisphere? A. Earth s axis changes depending on the season. B. Earth s axis is always towards the north star. C. Earth s axis is never towards the north star. D. Earth s axis changes depending on solar winds. 2. Imagine that the Earth had no tilt to its axis, as shown in the picture. What would happen? A. The weather would never change. B. There would be no seasons. C. The moon would fly off into space. D. The earth would stop spinning. 3. If Earth began to orbit twice as fast around the sun what would happen? A. Seasons would never change. B. Seasons would last longer. C. Seasons would not be predictable. D. Seasons would occur more frequently. 1

2 4. Which of the statements below best describes the length of time it takes for the Earth to revolve once around the sun? A. About twenty eight and one half days, or one complete moon cycle. B. About ninety days, or one season consisting of three moon cycles. C. About one hundred and eighty days, or from one side of the sun to the other. D. About three hundred and sixty five days, or twelve moon cycles. 5. Which of the following bests describes the movement of Earth in space. A. Earth orbits the sun one time each year. B. Earth revolves around the sun each day. C. Earth rotates around the sun but does not revolve. D. The revolution of Earth is never predictable. 6. The Northern Hemisphere absorbs more energy and heat when the A. axis is tilted toward the sun. B. axis is tilted away from the sun. C. Earth rotates and revolves. D. spring equinox occurs. 7. The moon revolves around Earth in a similar manner as A. the Voyager space probe revolves through the solar system. B. random asteroids revolve through space. C. our Earth revolves around our sun. D. a meteor travels through Earth s atmosphere. 2

3 8. Chris needed to give a demonstration of the Earth s yearly revolution around the sun. He was given a pencil, Styrofoam ball, and a flashlight. Which graphic would be the best diagram to use as a model for his demonstration? A. B. C. D. 9. Which of the statements below most accurately describes the yearly revolution (orbit) of the Earth around the sun? A. A perfect circle B. A nearly circular ellipse C. A slightly flattened eclipse D. An irregular spiral 10. Which statement below best describes the orbit of the Earth around the sun? A. The earth orbits the sun with its axis always tilted about 23.5 degrees away from the sun. B. The Earth orbits the sun with its axis perpendicular to the orbital plane of the sun. C. The Earth orbits the sun with its northern axis pointing towards the North star. D. The Earth orbits the sun with its axis always tilted about 23.5 degrees towards the sun. 3

4 11. A student recalls her teacher saying that the sun is higher in the sky in the summer than in the winter. She wonders if she could use her knowledge of shadows to tell the seasons of the year. What should you tell her? A. No, because shadows are always short at noon and very long in the evening. B. No, because there isn t any difference in the length of shadows at noon from season to season. C. Yes, because shadows are different lengths in every season of the year. D. Yes, because shadows are always longer at noon and very short in the morning. Use the drawing of a light shining on a piece of paper to answer the next question. The papers are all the same distance from the light. A B C 12. If a thermometer were placed on each piece of paper, which one would read the highest? A. A B. B C. C D. They would all be the same. 4

5 Grade 6 Standard 2 Objective 1 Answer Key 1. B 2. B 3. D 4. D 5. A 6. A 7. C 8. D 9. B 10. C 11. C 12. B 5