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Homework exercises on Observations in Astronomy for a Physical Science course. Also refer to physics, science, space, stars, planets, moon, telescopes, universe, education, distance learning, Ron Kurtus, School for Champions. Copyright © Restrictions
Observations in Astronomy - Homework Answers
After you have completed the Astronomy Homework, you can refer to these answers. Although it is better to have known the answer from your reading, the process of writing the correct answer on your homework sheet will help you remember the concepts.
1. How did ancient people tell time?
They used the movement of the Sun, Moon and stars. Some used a sundial.
2. What device dramatically changed the course of astronomy? Why?
The invention of the telescope allowed for many discoveries about the sky..
3. How is a spectrometer used to measure the speed of a star?
The shift of the colors of the star's light is measured with a spectrometer, indicating the speed of the star..
4. Where do we have these devices in space today?
Many of the satellites have telescopes and spectrometers, especially the Hubble Space Telescope.
5. What is the definition of a light year?
The distance light travels in 365 days.
6. Name two famous constellations in the sky.
Orion, the Big Dipper, the Little Dipper, and numerous other groups of stars that are named. Note that a single star or planet is NOT a constellation.
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