Planets/Solar System
The ____ is the center of our Solar System.
sun
The ____ is a layer of air, made of gases, that surrounds the Earth and protects humans from the sun's radiation.
atmosphere
The number of hours of daylight that a location receives varies depending on how far north or south it is from the:
Equator
A ____ is a machine that uses escaping gas to move.
rocket
The rotation of the Earth causes...
day and night time.
Which planet is the hottest planet in the solar system due to the greenhouse effect?
Venus
A _____ is a large collection of stars, gas, and dust held together by gravity.
galaxy
When it is Summer in the United States,
the Northern hemisphere is tilted toward the sun.
Which telescope has allowed scientists to learn more about planet Earth?
Hubble
The biggest planet in our solar system is...
When the lit side of the moon appears to get bigger, the moon is...
The time when the sun is directly above the equator, and daylight hours are equal to nighttime hours is called a(n):
equinox
A meteoroid is a _____, _______body that travels through space.
small, rocky
Earth sustains life because of...(hint: three reasons)
liquid water, suitable amount of sunshine, and breathable atmosphere.
True / False: Orion is not a planet in our Solar System.
True
How many stars are in our solar system?
One
When it is Summer in the Southern Hemisphere, it is ____ in the Northern Hemisphere.
winter
What separates the inner planets from the other planets?
Asteroid belt
When people on Earth cannot see a moon, which phase is the moon in?
New Moon
The 4 inner planets - Mercury, Venus, Earth, and Mars all have...
rocky surfaces
The chemical makeup of the Sun is:
helium and hydrogen
The Summer Solstice occurs on...
A __ is an instrument that is used to make distant objects appear brighter and larger.
telescope
Earth has seasons because...
its axis is tilted as it moves around the sun.