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Science Test
Study for science !
35
Science
8th Grade
01/13/2010

Additional Science Flashcards

 


 

Cards

Term
Astronomy
Definition
The study of the universe
Term
Meteoroid
Definition
A celestial body that can range in size from a speck to an object weighing thousands of kilograms
Term
Crater
Definition
Depressions in the moon's surface
Term
Micrometeoroid
Definition
Tiny objects no larger than sand grains
Term
Mascons
Definition
Areas of high gravity
Term
Rile
Definition
Trench like valleys running through maria bedrock
Term
Rays
Definition
Radiate from a number of craters
Term
Regolith
Definition
Loose rock materials
Term
Phases
Definition
The daily charges in the moon's appearance as viewed from earth
Term
Waxing
Definition
the face of the moon changes from dark to light, or from new moon to full moon
Term
Waning
Definition
The force of the moon gradually changes from all light to back to all dark, or from full moon back to new moon
Term
Gibbous
Definition

 

 

Term
Umbra
Definition
the area of a total shadow
Term
Penumbra
Definition
The area of a partial shadow
Term
Lunar eclipse
Definition
an event during which earth's shadow prevents the sunlight from reaching the moon
Term
Solar eclipse
Definition
When the moon comes between the sun and earth, moons shadow hits the earths surface
Term
one quarter
Definition

How big is our moon compared to the size of the earth?

 

Term
pluto
Definition

What other planet has a relatively large single moon?

Term
two moons, phobos and deimos
Definition

How many moons does mars have? What are there names?

Term
venus
Definition

What planet is considered to be Earth's twin?

Term
Genesis Rocks
Definition

What is the material called that dates back to the formation of the moon?

Term
25
Definition

For every 1 meteorite impact on the moon, how many were on Earth?

Term
orpheus, hit the earth twice
Definition

What was the name of the object thought to have struck the earth? how many times did it hit earth?

Term
15x larger
Definition

How much larger did the moon appear when it was first formed?

Term
6 hours
Definition

How long was a day on the earth back then?

Term
the moon moves from a distance of 3 cm every year, the tides cause this.
Definition

How far is the moon moving away from the moon each year? What causes this?

Term
the tilt of earths axis is 23.5 degrees in relative to the planets orbital plane
Definition

What is the tilt of the Earth's axis?

Term

The tilt is what contributes to the seasonal variations we see

Definition
what changes do the tilt cause?
Term
Mars
Definition

What other planet has a tilt of its axis similar to earths?

Term
hydrogen
Definition

What element was found on the moon to make scientists think there was water on the moon?

Term
too close to saturn
Definition

Why cant saturns rings coalesce to forma moon?

Term
tidal friction
Definition

What is causing the earth's rotation?

Term
stabelizes the earths tilt
Definition

How does the moons gravity keep the earths climate regulated?

Term
100,000,000 years
Definition

What is the average length of time between mass extinctions on earth?

Term
continue to recede and start to wobble
Definition

What is likely to the earth-moon system in 1 billion years?

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