Space And Pressure Vocab Flashcards
(29 cards)
Mass
The amount of matter in an object, measured in kg and it does not change with location
Weight
The force exerted by gravity on an object measured in N
Gravity
A force that attracts 2 objects together with mass towards each other. On earth it gives us weight
Gravitational field strength
The force of gravity acting on 1kg of mass, measured in N/kg
Solar system
The sun and all the objects that orbit around it
Planet
A large round object that orbits a star
Orbit
The curved path of an object around a star, planet or moon due to gravity
Star
A massive ball of gas that emits light and energy due to nuclear fusion
Asteroid
A small rocky object orbiting the Sun
Comet
A ball of gas and dust that release gas and dust when they get too close to the sun and create a glowing tail
Moon
A natural satellite that orbits the Earth
Meteor
Pieces of rock or metal from space that burn up when they enter the arch atmosphere
Satellite
An object that orbits a planet or star. Theses can be natural or artificial
Galaxy
A massive system of stars, planets, gas and dust held together by gravity
Universe
Everything that exists including all galaxies and space itself
Rotation
The spinning of a planer on its axis
Axis
An imaginary line through the centre of a planet around which it rotates
Tilt
The angle of a planets axis
Revolution
The movement of a planet around the sun in its orbit
Solistice
When the sun is at its highest or lowest point in the sky causing the longest or shortest day of the year
Equinox
When the day and the night are approximately equal in length. It occurs twice a year
Atmosphere
The layer of gases surrounding a planet
Atmospheric pressure
The force exerted by the weight of the air above of a surface
Altitude
Height above sea level
