Science Exam: Astronomy

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Astronomy
Sarah Eberle
Flashcards by Sarah Eberle, updated more than 1 year ago
Sarah Eberle
Created by Sarah Eberle over 7 years ago
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Question Answer
HR Diagram - a tool that astronomers use to classify stars according to their luminosity(brightness), color, temperature, and evolutionary stage(age).
Nebulae - clouds of dust and gas that are mainly made up of hydrogen
Main Sequence - place where most stars are for the majority of their life
Red Giant - When stars run out of hydrogen, they start fusing helium, and when the forces are unbalanced, the core contracts
Red Supergiant stars with a solar mass of 10+ become red super giants. They are bigger but have a shorter life-span than red giants(most likely because they burn brighter for a shorter period of time)
Black Hole forms when the initial solar mass of a star is greater than 30
Neutron Star After the explosion, a neutron star is formed. They are small but really dense
Supernova - the red super giant phase ends when a supernova occurs. When they run out of hydrogen, they fuse helium - this happens over several months
Massive Star - any star larger than eight solar masses during its regular life time is considered a massive star
Regular Star -a star under eight solar masses in its life time
Contour Lines - represents when a variable remains equal
Contour Intervals -a fixed change in the variable between two contour lines
Radio Telescope - looks at radio emissions from planetary objects Uses: -monitors signals from other planets, stars, and space objects Parts: -DISH: reflect the radio waves toward the antenna -ANTENNA: gathers radio waves and transmits them to receiver -RECEIVER: takes radio waves received by the antenna and converts them into electrical signals - AMPLIFIER: used to make the signal stronger -COMPUTER: used to interpret radio signal data
Rover TASKS: -Take pictures of surface -Check for signs of life -It can reach up to 3 feet away from itself -Test rock samples -Sends data back to NASA -Keeps itself warm PARTS: A body :Protect the various parts of the rover Propulsion: A way to move Communication equipment: A way to talk to and listen to people on Earth Computer:Process information sent from scientist at NASA Sensors:Help gather information about the surface Energy Supply: It needs to keep all the sensors working
Apollo 13 - a mission to mars that was called a "successful failure" because they did not reach the moon but NASA was able to get the astronauts home safely during drastic conditions. - many things went wrong during this mission
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