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Respiratory System
Excretory System
Astronomy
Planets
Astronomy 2
100
the windpipe is known as the
What is the trachea
100
the purpose of the excretory system is to
What is get rid of wastes
100
rocky objects that orbit the sun, mostly between Mars and Jupiter
What are asteroids
100
planet that is one AU (astronomical unit) from the sun
What is Earth
100
phase of the moon where no moon is visible in the sky
What is a new moon
200
spongy bags that fill up with air when you inhale
What are the lungs
200
the _____________ gets rid of sweat through pores
What is the skin
200
objects that travel around a star in a path
What are planets
200
planet with two moons
What is Mars
200
a planet's spin around the sun is its
What is revolution
300
two tubes that carry air to each lung
What are the bronchial tubes
300
the ______________ filter the blood
What is the kidneys
300
a planet's spin around itself
What is a rotation
300
planet with the shortest revolution
What is Mercury
300
the sun is made up of mostly __________ and ________ gases
What is hydrogen and helium
400
a dome-shaped muscle at the bottom of the chest
What is the diaphragm
400
the lungs get rid of ________________
What is carbon dioxide
400
a natural satellite of earth that orbits the earth in about 30 days
What is the moon
400
the hottest planet
What is Venus
400
the moon is _________________ when more the lighted side becomes visible each night in the sky
What is waxing
500
air sacs at the end of each bronchiole
What are the alveoli
500
the three parts of the excretory system are
What is the skin, lungs, and kidneys
500
frozen mass or ice, rock, and dust; "dirty snowballs"
What are comets
500
largest planet
What is Jupiter
500
"shooting stars"; meteoroids that hit Earth's atmosphere
What are meteors