Test 1 Flashcards
Solar system
All of the things that are in our galaxy and that revolve around our sun
Geocentric model
Center of the earth
Heliocentric model
Center of the sun
Epicycles
Orbiting around itself
Elliptical orbit
The shape planets orbit
Gravity
A force in our atmosphere
Sun
The star our solar system orbits around
Dwarf planet
Something that has some but nor all tithe characteristics of a planet
Natural satellite(moon)
Something that is natural and revolves around a planet
Asteroid
A large rock-shaped object in space that orbits the sun
Comet
Chunks of ice and dust traveling though space
Meteor
A meteoroid that has entered Earth’s atmosphere
Revolution
Orbit around the sun
Rotation
Orbit around itself
Space station
A large artificial satellite on which people live and work for long periods
Space shuttle
A spacecraft that can carry a crew into space, return to Earth, and be reused
Rover
A small robotic space probe that can move about the surface of the planet or the moon (Mars rover)
Probe
A spacecraft that has various scientific intents that collect data, that has no human crew
What are the 3 criteria for an object to be considered a planet
Rounded by gravity, must orbit around sun, must have clear orbit
List the planets in order from closest to the sun to farthest from the sun
Mercury Venus earth Mars Jupiter Saturn Uranus Neptune
Terrestrial planets
Earth Mercury Venus Mars
Gas planets
Jupiter Saturn Uranus Neptune
List some differences between the terrestrial and gas planets
Terrestrial are smaller rocky and dense and gas are large and gas
List the unique features of each planet
Mercury- smallest planet and is closest to the sun
List some unique features of each planet
Venus- hottest planet and earths sister
Unique features
Earth- only planet in our solar system with liquid water in the surface, home planet and has mantle and core
Unique features
Mars- known as red planet
Unique features
Jupiter- largest planet in our solar system
Unique features
Saturn- 7 rings
Unique features
Uranus- rings and it rotates sideways
Unique features
Neptune- blue planet and has violent weather
What force is responsible for creating the planets and their orbits
Gravity
What 2 factors change gravity
Distance and mass
Describe how gravity would change if you change the mass of the objects
Of you increase mass the gravity increases and of you decrease mass gravity decreases
Describe how gravity would change if you change the distance between the objects
Of you increase the distance, gravity decreases and if you decrease the distance gravity increases
What does rotation and revolution of the outer planets compare to the inner planets
Their rotation and revolution of the outer planets is longer than the inner planets
What are the big events in space exploration history in chronological order
Telescope is invented First artificial satellite First human in space First human on the moon First probe to send data from another planet Mars rover is launched
List some advancements used to make space travel possible
Velcro-hold down food/plates
Space station- long term living in space
