35779069
Description
Flashcards by Savanna Jewison, updated more than 1 year ago
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Created by Savanna Jewison
about 2 years ago
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| Question | Answer |
| Solstice | Longest and Shortest day of the year Sol = Sun Stice = Stop |
| Equinox | Night & Day are = Equi = equal Nox = night |
| Geocentric | Earth Centred Aristotle |
| Heliocentric | Sun Centered Copernicus' |
| Light Year | Used to measure distances OUTSIDE our solar system 300 000 km/s!!!!! |
| Astronomical Unit | Used to measure LOCAL distances (Distances in our solar system) AMU |
| Constellations | Recognized star patterns in the night sky 88 in total |
| Asterism | UNOFFICIALLY recognized star patterns |
| Galaxy | Solar System millions and billions of stars held together by gravitational forces |
| Black Hole | Region of space that has a gravitational pull so strong no even light can escape it! |
| ***Why is looking at stars in space looking in to the past? | Stars are so far away that it can take light years for a stars light to reach us. So light from lights years in the past is actually the light we see. |
| How can we use the Hertzsprung-Russell diagram to determine the temperature and brightness of stars? | the diagram tells us the temp and brightness of stars. The HIGHER on the diagram the BRIGHTER the star is. The FARTHER you go RIGHT the COOLER the star get. |
| ***What did these significant occurrences mean for ancient peoples? (ex. Stonehenge, solstice…) | Stonehenge - Marked the solstices Solstice & Equinox - Told them when it was time to plant and harvest |
| The three galaxy types | Spiral Elliptical Irregular |
| The 2 star life cycle sequences? | Sun-like Star - Nebula_Protostar_Sun-like Star_Redgiant_White dwarf_Black Dwarf Massive Star - Nebula _ Protostar_Massive star_RedSUPERgiant_SUPERNOVA_Black Hole OR Neutron Star |
| ***Planets – general information, and the order; terrestrial vs. Jovian | M V E M J S U N Jovian - Gaseous - bigger - Rings - Lots of moons Terrestrial - Rocky - smaller - No rings - Few moons |
| Define: Comets, Meteors, Meteorites, and Meteoroids | Comets - "Dirty Snowballs" _ Appearances can be predicted because of their predictable ellipses _ tails alway face directly away from the sun Meteoroids - Flying randomly in space Meteors - Burning in Earth's atmosphere - Atmospheric pressure makes they glow Meteorites - Meteors that have hit Earth |
| How is an astrolabe used to determine the position of celestial objects? Define altitude and azimuth. | Azimuth – Compass direction – Always moving Clockwise Altitude – height of object First, look at the bottom of the astrolabe you will see a compass, place it on a flat surface and line up 0 with north. Second, you use the top flat part (altitude finder) and make sure you can see the object you are looking for in the 2 small holes. Then you will take the number at the bottom of the flat part (# is the height) Third, look at the bottom part again and find what number your object lines up with. |
| Parts of a Rocket | Payload Fuel Structural & Mechanical Parts |
| What is the speed needed by rockets to overcome Earth’s orbit? What is a possible solution to avoid the problem of Earth’s gravitational pull when launching interplanetary rockets? | 28 000 km/h is needed to overcome Earth's orbit/gravity Launching from the ISS is an option when trying to avoid Earth's gravity. A purpose of the ISS is launching interplanetary rockets. |
| Give info about: Shuttles, Space Probes, Stations | Shuttles - To bring people and supplies to space crafts Space Probes - UNMANNED space crafts/remote controlled to explore other planets/distant places Stations - Observation, Research, Launching interplanetary rockets |
| Some spacesuit features | Outer layer radiation protection Inner layer - Cold protection Lights |
| What is the difference between gravity and microgravity? What are some effects of microgravity on the body? | Gravity - FORCE OF attraction BETWEEN masses Microgravity - FORCES THAT ACT ON GRAVITY ARE GREATLY REDUCED Effect of microgravity is bone loss |
| Describe the 4 types of satellites that we studied. What is geosynchronous orbit? | Research & Observation - Weather- Look at the weather _ used to FORECAST WEATHER RESEARCH-AlSO BE USED TO TRACK SHIPS AT SEA, FOREST FIRE, SOIL QUALITY Communication- Used for phone signals - CREATE CLEARER TRANSMISSIONS _ MAKE MANY USERS POSSIBLE Remote Sensing - senses waves like heat and OBSERVES EARTH & SEND INFO BACK TO EARTH WITHOUT TOUCHING GPS- used to find you location Geosynchronous Orbit - Eg Weather satellites - satellites are assigned to one place they follow that one spot matching the speed of Earth's orbit. |
| Optical telescopes - what are their advantages and disadvantages? What are the differences between refracting and reflecting telescopes? | A - Don't take up a lot of space - clear images D-Cost - size limit - limit to how far we can see -BLOCKED BY WEATHER Refracting - Use lenses -LIMIT TO HOW POWERFUL THEY CAN BE Reflecting - Use mirrors and lenses - Spin casting SEGMENTED MIRRORS (lots of mirrors into one big mirror) |
| What are the advantages of the Hubble Space Telescope? | Not affected by weather Closer to objects |
| How are radio telescopes different from optical telescopes? | Radio- Need a lot of space - Need radio silent zones -No limit to what we can see - USE RADIO WAVES NOT AFFECTED BY WEATHER USED NIGHT AND DAY Optical- Not a lot of space needed No radio silence needed Limit to what we can see USE VISIBLE LIGHT BLOCKED BY WEATHER USED MOSTLY IN THE NIGHT |
| What is the technique known as interferometry? | Combining one or more telescopes to create a clearer image |
| What is spectroscopy? What does it tell us about stars? | Is the study of the absorption & emission of light Tells us the **composition** of stars |
| Red-shift, blue-shift | RS- Moving away from Earth BS-Moving toward Earth |
| What do parallax and triangulation tell us about celestial objects? | DISTANCE ......... Of celestial objects |
| What is space junk and why is it a problem? | Space Junk- pieces that have fallen off rockets and are now just floating in space Space Junk is hard to detect on Radars sometimes spacecraft can crash into them |
| Identify some issues related to space exploration using these categories: economic, political, ethical, environmental. | Economic Who will pay Political - Who owns space Ethical - WHY NOT EARTH PROBLEMS FIRST Environmental- WHO NEEDS TO MAKE SURE SPACE ENVIRONMENTS DON'T GET HARMED |
| What is your opinion on future space exploration? | COMPLICATED |
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