The Rock Cycle
What are the three kinds of rocks?
Igneous, metamorphic, sedimentary
What does luster mean?
What 2 layers of the earth are the tectonic plates a part of?
The crust and the upper part of the mantle. (Lithosphere is also an acceptable answer)
What is a volcano?
a mountain with magma in it, capable of erupting lava (many definitions are acceptable)
How many days are in a year?
365
This type of rock is formed by sediments being compacted and cemented together over time.
Sedimentary
Name one of the objects that can be used to test the hardness of a mineral
fingernail, steel nail, glass, drill bit, copper penny
In what direction do divergent plate boundaries move in?
Away from each other
<----- | ----->
What is magma called when it reaches the surface of the earth?
Lava
True or false, elephants can't swim
False! They can swim!
Weathering and erosion breaks down rocks into small pieces called....
sediments
What does streak mean?
The color of the mineral when scratched on a hard surface
Which directions do transform plate boundaries move in?
side to side or sliding against each other.
What is the Ring of Fire?
A line of many volcanoes that surrounds the pacific ocean where the pacific plate boundary exists.
How much does the average cloud weigh?
a. less than 1 pound
b. between 1-99 pounds
c. about 1,000 pounds
d. about a million pounds
The average cloud weighs about 1 million pounds! Thats more than an airplane full of cargo.
When rock is put under additional pressure and heat for a long period of time it becomes....
Metamorphic rock
What does a mineral's 'crystal structure' mean?
It has a pattern in the way it is shaped
What does subduction mean?
It is when the oceanic plate moves under the continental
What does viscous mean?
having a thick, slow moving liquid texture, like honey rather than water.
How many toes do horses have?
Modern horses techincally only have 4 toes, though they once had 5 before evolving the hoof. It is debated by scientists.
Obsidian, Balsat, Pumice, and granite are all examples of this kind of rock.
Igneous
There are five traits that define a mineral (ex: naturally occurring), name one of them not already listed.
Naturally occurring (does not count), inorganic, solid, has a fixed chemical formula, has a crystal structure
What is Pangea?
A supercontinent that existed millions of years ago, when all the continents were connected to each other.
What does VEI mean?
Volcanic expolsivity index
What year was Pluto's planet status taken away? (Hint: its between 2000 and 2010).
2006