Space Exploration

Question 1

Geocentric model

Answer 1

Earth centered model proposed by Aristotle

Question 2

Heliocentric model

Answer 2

sun centered model proposed by Copernicus

Question 3

Astronomical Unit (AU)

Answer 3

units used to measure distances in solar system, one AU is equal to the distance from the earth to the sun

Question 4

Light year

Answer 4

the distance light can ravel in one year (9.5 trillion km in a year= 1 light year)

Question 5

Asterisms

Answer 5

Distinctive star grouping that is not one of the 88 constellations

Question 6

Galaxy

Answer 6

grouping of billions of stars, gas, and dust held together by gravity

Question 7

Inner planets

Answer 7

Mercury, Venus, Earth, Mars (smaller and rockier in composition)

Question 8

OUter planets

Answer 8

Jupiter, Saturn, Uranus, Neptune (larger and and gasier)

Question 9

Azimuth

Answer 9

Compass direction, due North 0 degrees, going clockwise

Question 10

Altitude

Answer 10

Shows how high up you are in the sky, 0 degrees being the horizon, 90 degrees being straight up

Question 11

Zenith

Answer 11

highest point above your head

Question 12

Payload

Answer 12

Materials that are needed for flight to space, crew cabins, food, water, air, people

Question 13

Ion drives

Answer 13

Engines that use xenon gas that is electrically charged and accelerated to push the rocket away from the emission and up into space

Question 14

Solar Sails

Answer 14

Harness the sun’s light. Sun emits electromagnetic energy called photons that hit the sail and cause the spacecraft to move

Question 15

Space Probes

Answer 15

Used for robotic exploration of space

Question 16

Shuttles

Answer 16

Transport people and equitment to orbiting spacecraft

Question 17

Space Stations

Answer 17

ISS

Question 18

Geosynchronous orbit

Answer 18

When a satellite moves with the earth at the same speed as the earth

Question 19

Remote Sensing

Answer 19

A process in which digital imaging devices make observations of Earth’s surface and send them back to Earth

Question 20

Refracting telescope

Answer 20

uses two lenses to gather and focus starlight

Question 21

Reflecting telescope

Answer 21

uses mirrors to gather and focus the light from stars

Question 22

Interferometry

Answer 22

using telescopes in combination produces better resolution than one

Question 23

Frequency

Answer 23

The number of waves that pass a single point in one second

Question 24

Electromagnetic energy

Answer 24

includes radio waves, infrared waves, and X-rays, travels at the speed of light (300 000 km/s)

Question 25

Radio telescope

Answer 25

Telescope system that collect and analyzes radiation in the radio frequency range from stars and other bodies in space

Question 26

Spectrometer

Answer 26

Determines the composition of a star by looking at the the elements

Question 27

Doppler effect

Answer 27

Change on wavelength or frequency of sound waves because they are stretched or squeezed