PHYSICS-space Flashcards
What is a axis
a imaginary vertical line that goes form one pole of the earth to the other, the earth spin on the axis
what makes a day
24 hours, the time it takes for the earth to spin once on it axis
what is earth
the planet we live on
what is a leap year
a year with 366 days in it, we have a leap year every 4 years
what is a lunar month
28 days- the time it takes the moon to orbit around earth once
what is the moon
the moon is a large piece of rock orbiting around the planet
what does orbit mean
the path that a planet takes around the sun, or that a moon or satellite take around a planet
what is a satellite
any object/thing that orbits a planet
what is a sphere
a shape like a ball
what is the sun
the biggest star in the universe it also orbits the earth
what is a year
the length it takes a planet to go around the sun. (365.25 days)
what is a full moon
when the moon looks like a bright full circle of light
what is luminous
when something gives of light
what is a lunar eclipse
when the moon moves into the shadow of the earth
what is a new moon
when we cannot see the lit-up side of the moon
what is a partial eclipse
a solar eclipse when the moon is between earth and the sun and casts a shadow on part of the earth
what is a total eclipse
when the moon completely blocks out light from the sun
what is the equator
an imaginary line through the middle of the earth
what is hemispheres
the two half’s of a sphere
what is the northern hemisphere
the half of the earth with the north pole in it
what is an asteroid
a small lump of rock orbiting around the sun
what is the solar system
a star with planets and other objects orbiting it
what is a constellation
a patten of stars
what is a galaxy
millions of stars grouped together
