students will be able to define electromagnetic radiation. students will be able to explain how...
TRANSCRIPT
![Page 1: Students will be able to define electromagnetic radiation. Students will be able to explain how telescopes work. Students will be able to describe](https://reader035.vdocuments.site/reader035/viewer/2022062517/56649efc5503460f94c0ed8c/html5/thumbnails/1.jpg)
![Page 2: Students will be able to define electromagnetic radiation. Students will be able to explain how telescopes work. Students will be able to describe](https://reader035.vdocuments.site/reader035/viewer/2022062517/56649efc5503460f94c0ed8c/html5/thumbnails/2.jpg)
Students will be able to define electromagnetic radiation.
Students will be able to explain how telescopes work.
Students will be able to describe how space exploration helps scientists learn about the universe.
![Page 3: Students will be able to define electromagnetic radiation. Students will be able to explain how telescopes work. Students will be able to describe](https://reader035.vdocuments.site/reader035/viewer/2022062517/56649efc5503460f94c0ed8c/html5/thumbnails/3.jpg)
Refraction: Occurs when a light ray changes direction as it passes from one material into another.
![Page 4: Students will be able to define electromagnetic radiation. Students will be able to explain how telescopes work. Students will be able to describe](https://reader035.vdocuments.site/reader035/viewer/2022062517/56649efc5503460f94c0ed8c/html5/thumbnails/4.jpg)
Page 764
Main Idea: Radiation emitted or reflected by distant objects allows scientists to study the universe.
![Page 5: Students will be able to define electromagnetic radiation. Students will be able to explain how telescopes work. Students will be able to describe](https://reader035.vdocuments.site/reader035/viewer/2022062517/56649efc5503460f94c0ed8c/html5/thumbnails/5.jpg)
Page 764
Electromagnetic Radiation: Electric and magnetic disturbances traveling through space as waves.
Electromagnetic Spectrum: Electromagnetic radiation arranged according to wavelength and frequency.
![Page 6: Students will be able to define electromagnetic radiation. Students will be able to explain how telescopes work. Students will be able to describe](https://reader035.vdocuments.site/reader035/viewer/2022062517/56649efc5503460f94c0ed8c/html5/thumbnails/6.jpg)
Electromagnetic Spectrum
High Energy = Hot Low Energy = Cool
![Page 7: Students will be able to define electromagnetic radiation. Students will be able to explain how telescopes work. Students will be able to describe](https://reader035.vdocuments.site/reader035/viewer/2022062517/56649efc5503460f94c0ed8c/html5/thumbnails/7.jpg)
Page 764
Wavelength and Frequency: • Wavelength: Distance between
peaks on a wave.• Frequency: Number of waves that
pass a given point pre second. Measured in Hertz (Hz) = 1 cycle per second.
![Page 8: Students will be able to define electromagnetic radiation. Students will be able to explain how telescopes work. Students will be able to describe](https://reader035.vdocuments.site/reader035/viewer/2022062517/56649efc5503460f94c0ed8c/html5/thumbnails/8.jpg)
Page 765
Telescopes: • Objects in space emit
electromagnetic radiation.• Telescopes collect electromagnetic
radiation and turn it into an image.• Aperture: A telescope’s opening.
Can be up to 10 m in diameter. Larger aperture = More electromagnetic
radiation.
![Page 9: Students will be able to define electromagnetic radiation. Students will be able to explain how telescopes work. Students will be able to describe](https://reader035.vdocuments.site/reader035/viewer/2022062517/56649efc5503460f94c0ed8c/html5/thumbnails/9.jpg)
Page 766
Refracting and Reflecting Telescopes: • Refracting Telescope: Uses lenses to
bring visible light into a focus. Invented in 1600s.
• Reflecting Telescopes: Invented in 1668. Uses mirrors to bring visible light into focus.
• Best locations for telescopes are away from city lights and at high elevations where there is less atmosphere to interfere with images.
![Page 10: Students will be able to define electromagnetic radiation. Students will be able to explain how telescopes work. Students will be able to describe](https://reader035.vdocuments.site/reader035/viewer/2022062517/56649efc5503460f94c0ed8c/html5/thumbnails/10.jpg)
![Page 11: Students will be able to define electromagnetic radiation. Students will be able to explain how telescopes work. Students will be able to describe](https://reader035.vdocuments.site/reader035/viewer/2022062517/56649efc5503460f94c0ed8c/html5/thumbnails/11.jpg)
Page 766
Telescopes Using Non-Visible Wavelengths: • Some electromagnetic radiation
cannot be seen. i.e. X-Rays and Gamma Rays
• Telescopes can only detect the direction from which this type of radiation comes.
![Page 12: Students will be able to define electromagnetic radiation. Students will be able to explain how telescopes work. Students will be able to describe](https://reader035.vdocuments.site/reader035/viewer/2022062517/56649efc5503460f94c0ed8c/html5/thumbnails/12.jpg)
Page 766
Radiotelescope: Uses a dish to collect radio and longer wave length electromagnetic radiation.
Interferometry: Technique that combines several images to create 1 image.• Brings out more details.
![Page 13: Students will be able to define electromagnetic radiation. Students will be able to explain how telescopes work. Students will be able to describe](https://reader035.vdocuments.site/reader035/viewer/2022062517/56649efc5503460f94c0ed8c/html5/thumbnails/13.jpg)