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Unit 5-Earth & Univ.

Question	Answer
An object is pulled to Earth by	gravity
Gravity is the force that determines the	weight of matter
Because the earth rotates on its axis, we have	day and night
Why does almost all of earth have different seasons?	Earth is tilted on its axis as it revolves around the sun during a year.
How long does it take Earth to revolve around the sun?	One year
If the Eastern Hemisphere is experiencing nighttime, where is the sun?	In the Western Hemisphere
What would be a demonstration of how the force of gravity pulls objects towards the center of Earth?	Throwing a ball in the air and it falls to the ground.
When the sun's rays are more directly over the northern hemisphere, what season would the US experience?	Summer
What would happen if the Earth rotated faster?	Our days would be shorter
Where does the sun rise?	The east
Where does the sun set?	The west
Why would a satellite orbiting Earth most likely fall into the atmosphere?	Gravity's pull
There are 88 named constellations.	True
Constellations are a group of stars.	True
Constellations are usually named after animals or people in stories.	True
All the constellations can be seen anywhere on a clear night.	False
Why do we have a day that is 24 hours long?	It takes 24 hours for the Earth to rotate once around the sun.
Why would a shadow of a tree move from one side to another during different times of the day?	Because the Earth rotates on its axis
What causes day and night?	The rotation of Earth on its axis.
Why does Earth have different seasons?	Because the Earth tilts on its axis as it revolves around the sun.
What part of Earth receives more solar energy?	The equator.
How does the heat from the sun affect the temperature of our atmosphere?	The temperature is always changing.
What type of star is the sun?	A medium-sized star.
Star	a massive ball of gas in outer space that gives off heat, light and other forms of radiation
Radiant energy	energy that does not need matter to travel; light
Season	a period of the year determined by the position of Earth as it revolves around the sun
Galaxy	a group of solar systems, dust, and gas held together by gravity; our solar system is part of the Milky Way galaxy
Orbit	the circular or elliptical path of an object as it revolves around another object
Astronomy	the study of the properties and behavior of bodies in outer space
Space	the large, empty part of the universe that does not contain any matter
Constellation	a particular area of the sky; a group of stars usually named for animals or people in stories.
Axis	an imaginary line that an object spins or revolves around
Telescope	an instrument used to observe objects that are far away
Rotate	turning around on an axis; spinning
Universe	everything that exists in, on and around the Earth
Small stars are brighter than large stars.	False
Stars are different colors depending on how hot they are.	True
The brightness of a star is called magnitude.	True
Very hot stars are blue and the coolest stars are red.	True
The sun is the source of light.	True
The sun is a huge sphere of burning gas.	True
Hydrogen keeps a star shining.	True
Stars close to Earth appear brighter.	True
The moon and sun are both stars.	False
The sun's light is so bright that stars cannot be seen during the day.	True
Which is similar to the sun in terms of composition?	stars
What would happen if Earth rotated faster?	Each day would be shorter.
Why does the sun appear to rise in the east and set in the west?	Because the Earth rotates on its axis.

Created by: Pamela Hebert

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