2. Without light and heat from the Sun, life cannot exist on Earth. 3. The Sun provides light energy and heat energy directly to living
Cepheid variable stars have masses much larger than our Sun; the more massive stars are more luminous and have more extended envelopes 10. The stars near the centers of galaxies are orbiting at high velocities, which mean that there is the presence of super-massive black holes in the centers of most galaxies. 11. Large galaxies can absorb smaller galaxies called galactic cannibalism. Chapter 14 1.
____________________ ____ 19. Electromagnetic waves carry mechanical energy. _________________________ ____ 20. As the frequency of an electromagnetic wave increases, the speed of the wave increases. _________________________ ____ 21.
Light travels in straight lines When an object is held between a point source of light and a screen, a shadow is formed. If a line is drawn (representing a light ray) joining the light source, the top of the object, and the top of the shadow, this line is straight. 3. Light can be reflected When light strikes a surface, it can bounces back off that surface, Practically every surface reflects some light – if not, we would not be able to see colors. 4.
The light has certain qualities that give information such as intensity (brightness) and color. The intensity gives an idea of the number of light waves. The color can measure the energy in each photon (an elementary particle with electromagnetic radiation.). Astronauts study many of the things astronomers do. Astronauts usually have a career in either piloting or being a scientist.
Force Fields Summary Response In Michio Kaku’s article “Force Fields”, he explains how a force field can deflect laser beams. Throughout out his article Kaku shows that future science might be able to provide the same technology as science fiction TV shows such as Star Trek because he believes that science would overcome issues of limited technology. In order for force field function correctly he suggests that there has to have three layers. The outer layer is high temperature plasma created by supercharged plasma window. The middle layer is a group of laser beams.
Spectra can tell us what makes up a star just by analyzing it. The rainbow isn’t the only thing that makes up the star spectra. If you had the ability to look into the light that comes after the color red, you will encounter the infrared light (it is the heat felt on the skin) which eventually merges into the radio section of the spectrum. On the other side of the rainbow, next to violet is a small portion called the ultra violet, which gives us sunburns and tans. You would then find the section of x-ray radiation then the deadly gamma rays.
To turn light into energy. • Because photosynthesis only occurs in plants, why is it essential to animal life? Animals eat plants to make energy; also plants make oxygen as a bi-product of photosynthesis. • What is the role of the light reactions? Include the reactants and the products.
6. What is CMB radiation? Radiation emitted by the Big Bang, which now has caused a much bigger wavelength because of the expansion of the universe. 7. Which theory is supported by the following evidence- h) red shift-both i) the cosmic microwave background radiation-Big Bang.
It means that electricity is a force that powers out world and our bodies (How stuff works, 2010). Humans bend electricity