Chapter 30 Section 1 Flashcards
What are patterns in stars in the night sky called?
Constellations
What collects and amplifies radio waves?
Radio Telescope
What is a light-year?
- The distance light travels in one year.
- A light-year is about 9.5 trillion kilometres.
What uses a prism or diffraction grating to separate light into its component wavelengths?
Spectroscope
How did the constellations got their names?
Characters in stories, animals, and even tools.
What is the constellation called that is named after a great hunter?
- Orion
- Little dog : Canis Minor
- Big dog : Canis Major
How many types of basic types of optical telescopes are there?
2
- Only lenses to collect and focus light
- Uses tenses and mirrors.
What does a refracting telescope use?
A refracting telescope uses convex lens.
What does a reflecting telescope use?
A reflecting telescope uses a mirror as an objective to collect and focus light. Convex
What are the names of the two telescopes?
- Refracting
- Reflecting
Why are Space telescopes are better to use than a ground telescope?
It doesn’t have Earth’s atmosphere interrupting the images.
What are the two space telescopes called?
- Chandra X-Ray Observatory
- Spilzer Space Telescope
What are the 3 things that Spectroscopes can detect on a star?
- Chemical composition
- Surface temperature
- Whether it is moving away from or toward Earth
What is a blue wavelength?
- Apears blue
- Wavelength is closer together
What is red wavelength?
- Apears red
- Wavelength is farther apart
