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Solar System

7 Solar System

Imaginary vertical line that goes from one pole of the Earth to the other. The Earth spins around its. axis
24 hours, the time it takes the Earth to spin once on its axis. day
The planet we live on. Earth
A year with 366 days in it.We have a one every 4 years. leap year
28 days – the time it takes the Moon to orbit around the Earth once. lunar month
A large lump of rock orbiting around a planet. Moon
The path that a planet takes around the Sun, or the path that a moon or satellite takes around a planet. orbit
Anything that orbits a planet. satellite
A shape like a ball. sphere
The star that the Earth orbits around. Sun
The length of time it takes a planet to go around the Sun. year
The phase of the Moon when it looks like a bright, full circle. full moon
An object that gives out light. luminous
When the Moon moves into the shadow of the Earth. lunar eclipse
The phase of the Moon when we cannot see the lit-up side. new moon
A solar eclipse when the Moon only covers part of the Sun. partial eclipse
The different shapes the Moon seems to have at different times. phases of the Moon
When the Moon is between the Sun and the Earth, and casts a shadow on part of the Earth. solar eclipse
A solar eclipse when the Moon completely blocks out light from the Sun. total eclipse
An imaginary line around the middle of the Earth. Equator
The two halves of a sphere – the shape you would get if you cut a solid ball in half. hemispheres
The half of the Earth with the North Pole in it. northern hemisphere
A small lump of rock orbiting around the Sun asteroid
Mercury, Venus, Earth and Mars. inner planets or rocky planets
Jupiter, Saturn, Uranus, Neptune and Pluto. outer planets or gas planets
A star with planets and other objects orbiting it. solar system
A pattern of stars. constellation
Millions of stars grouped together. galaxy
The distance that light travels in one year. light year
The galaxy that our Solar System is in. Milky Way
A huge ball of gas that gives out heat and light energy. star
All the galaxies and the space between them make up this. Universe
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Popular Physics sets




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