Flashcards
Science Exam: Astronomy
Flashcards do conjunto (15)
- 1HR Diagram- a tool that astronomers use to classify stars according to their luminosity(brightness), color, temperature, and evolutionary stage(age).
- 2Nebulae- clouds of dust and gas that are mainly made up of hydrogen
- 3Main Sequence- place where most stars are for the majority of their life
- 4Red Giant- When stars run out of hydrogen, they start fusing helium, and when the forces are unbalanced, the core contracts
- 5Red Supergiantstars 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)
- 6Black Holeforms when the initial solar mass of a star is greater than 30
- 7Neutron StarAfter the explosion, a neutron star is formed. They are small but really dense
- 8Supernova- the red super giant phase ends when a supernova occurs. When they run out of hydrogen, they fuse helium
- this happens over several months - 9Massive Star- any star larger than eight solar masses during its regular life time is considered a massive star
- 10Regular Star-a star under eight solar masses in its life time
- 11Contour Lines- represents when a variable remains equal
- 12Contour Intervals-a fixed change in the variable between two contour lines
- 13Radio 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 - 14RoverTASKS:
-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 - 15Apollo 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