Solar System Unit Test Flashcards
How long does it take Earth to turn on its axis?
1 day or 24 hours
Why is august hotter than January?
The North Pole tilts toward the sun in August and away in January
What characteristic do all inner planets have?
relatively large cores
What is the correct order of moon phases you could see throughout the month
New moon, First quarter, full moon, third quarter
What characteristics describe Mars?
iron oxide in soil; fourth planet from the sun
What are the planets in order from the sun
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
what does rotate mean?
move in a circle on an axis
What are the inner planets mostly made of?
melted rock and metal
What are the outer planets mostly made of?
gas and ice particles
what is the name of the two groups of planets?
inner and outer planets
Why can’t probes land on the outer planets?
they are made up of gas and do not have a solid surface
What is it called for the moon changes?
moon phases
What does orbit mean?
the path one object takes around another object in space
What is a large round object that revolves around a star?
a planet
What causes us to have night and day?
Earth rotating on its axis
