Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
SS Unit Part 2
Vocab
| Definition | Term |
|---|---|
| regions divided in the sky that help with navigation. They are considered the maps of the sky. | Constellations |
| used to detect different ranges of wavelengths that objects in space emit. | Electromagnetic Spectrum |
| spreads light into different wavelengths and is used to see a star’s spectrum. | Spectroscope |
| The range of wavelengths that a star emits; the energy/composition/ brightness of a star. | Spectrum |
| is the distance light travels in 1 year of time. | Light Year |
| is a measure of how bright the star appears from Earth. | Apparent magnitude |
| measures the stars luminosity, or its actual brightness. | Absolute magnitude |
| a large ball of gas held together by gravity with a core so hot that nuclear fusion occurs. | Star |
| where hot gas moves up towards the surface and cooler gas moves deeper into the interior. Light energy here moves quickly upward in the convection zone. | Convection zone |
| a shell of cooler hydrogen above a star’s core. | Radiative zone |
| the apparent surface of a star. | Photosphere |
| s the orange-red layer above the Photosphere. | Chromosphere |
| the wide, outermost layer of a star’s atmosphere. | Corona |
| regions of strong magnetic activity and are cooler than the rest of the photosphere so they appear as dark splotches on the Sun. | Sunspots |
| are clouds of gas that make loops and jets extending into the corona and they begin at or just above the photosphere | Prominences and Flares |
| huge bubbles of gas ejected from the corona. These are much larger than flares. Material from CMEs can reach the Earth and cause radio blackouts or damage orbiting satellites. | Coronal Mass Ejections (CMEs) |
| charged particles that continually stream away from the Sun. This passes through Earth and extends to the end of the Solar System. | The Solar Wind |
| a huge collection of stars. | Galaxy |
| Matter that emits no light at any wavelength (so not just visible light, but any known type of electromagnetic emission). | Dark matter |
| has spiral arms that begin at a central disk. Some spiral arms are long and symmetrical; others are short and stubby. | Spiral Galaxies |
| elliptical galaxies do not have internal structure, contain old stars, and have little to no dust. | Elliptical Galaxies |
| these are oddly shaped, contain a ton of new stars, and have much dust. | Irregular galaxies |
| groups of galaxies held together by gravity | Clusters |
| how space stretches by measuring the speed at which galaxies move away from Earth. (The shift to a different wavelength) | The Doppler Shift |
| Galaxy is moving away. | Red Shifted |
| Galaxy is moving towards. | Blue Shifted |
| the energy that pushes galaxies apart or away from each other. | Dark Energy |
Created by:
lkpritchard.29.fpdmacon.org
Popular Earth Science sets