Shared Flashcard Set

Details

Space
Test questions
26
Science
5th Grade
01/20/2010

Additional Science Flashcards

 


 

Cards

Term
How many stars are in our sky?
Definition
There are billions of stars in our sky.
Term
About how many stars can you see with just your eyes?
Definition
You can see about 2,000 stars using just your eyes.
Term
What tools can you use to see into space?
Definition
You can see into space with binoculars or a telescope.
Term
What are stars made of?
Definition
Stars are huge balls of hot gases.
Term
What do stars make?
Definition
Stars use their gases to make heat and light.
Term
What do we call the group of stars in our sky?
Definition
We call the group of stars we see in the sky "The Milky Way"
Term
Why do stars twinkle?
Definition
Light comes from the stars in straight lines. When the light gets to Earth, it must pass through layers of air that are around the Earth. The air makes the light bend.
Term
What is the layer of are around our Earth called?
Definition
The layer of air around our Earth is called our atmosphere.
Term
Put is size order, greatest to smallest. Sun, Moon, Earth
Definition
Sun is the largest, Earth is the second largest, and the moon is the smallest.
Term
How long does it take the Earth to travel around the sun?
Definition
The Earth travels around the sun in one year.
Term
Why can we see the sun but seldom see other stars during the day?
Definition
Stars are always in the sky. Our sun makes so much light, it hides the other stars in the daytime.
Term
The sun gives us energy in what forms?
Definition
The sun gives us energy in the form of heat and light.
Term
Without the energy of sunlight, what would happen to the Earth?
Definition
The earth would be frozen and lifeless.
Term
Why do plants need sunlight?
Definition
Plants need the sunlight so they can make food and oxygen.
Term
Why is a moon called a satellite?
Definition
The moon is called a satellite because it
Term
How long does it take the moon to orbit around the Earth?
Definition
It takes the moon about 29 days (one month) to orbit around Earth.
Term
What are the big holes on the moon called and where to they come from?
Definition
The big holes are called craters. Craters are made when space rock hits the moon.
Term
If the moon doesn't make it's own light, how can we see it?
Definition
We see it because it reflects light from the sun.
Term
How long is a day on the moon?
Definition
The moon turns so slowly that a day is two weeks long.
Term
What is the weather like on the moon and why?
Definition
During the daytime the moon is very hot. It is hotter than boiling water. This is because there is no air to protect the moon from the hot sunlight. At night, the moon gets very cold. It is much colder than freezing. This is because there is no air to hold heat on the moon.
Term
How many men have walked on the moon?
Definition
Twelve men have gone to the moon.
Term
How long does it take Earth to make one turn on its axis?
Definition
It makes one turn on its axis every 24 hours.
Term
How often does the earth revolve around the sun?
Definition
It revolves around the sun once every year.
Term
Does the sun move across the sky? Why or why not?
Definition
The sun seems to move across the sky during the day. It is really the Earth's spinning that causes this to happen.
Term
How long are days on the moon?
Definition
The moon spins very slowly, so days and nights are two weeks long.
Term
Define the equator.
Definition
The equator is an imaginary line around the middle of our planet. It divides the Earth in half.
Supporting users have an ad free experience!