Unit 3: Concept 3.3 Vocabulary

the third planet from the Sun; the planet on which we live

• Earth

• sun

• moon

• lunar sclipse

any star around which planets revolve

• revolve

• telescope

• sun

• lunar eclipse

a body in outer space that orbits a planet; a natural satellite

• lunar

• orbit

• telescope

• moon

having to do with the moon or moon cycles

• Earth

• lunar

• orbit

• revolve

when the moon passes directly behind the Earth and into its shadow

• lunar eclipse

• sun

• eclipse

• orbit

the temporary blockage of the sunlight by the Moon as it

travels between Earth and the Sun

• solar eclipse

• Earth

• revolve

• moon

an event that happens when the shadow of an object in space

falls on the surface of another object

• eclipse

• telescope

• moon

• sun

to move around another object along a circular path, as in an orbit

• solar eclipse

• Earth

• revolve

• sun

an instrument used to observe objects that are far away

• lunar eclipse

• telescope

• orbit

• eclipse

the circular path of an object as it revolves around another object

• orbit

• lunar

• Earth

• solar eclipse