layers of Earth
What is the outer most layer of Earth?
Crust
liquid rock on Earth's surface is called
lava
Name the planet closest in size to Earth
Venus
A place where stars are born
nebula
An arm with a fixed point that moves around it is a
lever
Which layer is the hottest but surprisingly solid and not melted?
Inner core
Rock made directly from magma or lava is
igneous
Where is the asteroid belt located?
between Mars and Jupiter
A high mass star may do this before it becomes a black hole
super nova
This type of lever can change the direction of the force without changing the amount of force
1st class lever
What do we call the stiff rigid masses that float on the aesthensophere?
tectonic plates
rock formed from weathering, erosion, and compaction is
sedimentary
Name the gas planets in order from the sun
Jupiter, Saturn, Uranus, Neptune
which type of main sequence star is the coolest and dimmest on the HR diagram
low mass
true or false, machines reduce the force needed to do work
true
At which boundary do plates move away from each other?
divergent
metamorphic
Comets are made mostly of this
ice and gas
white dwarf
friction
What event would you most likely find at a transform fault boundary?
earthquake
igneous rock that cooled so quickly it didn't have time to form visible crystals
obsidian
How long is one revolution on Earth
365 days/year
What shape is our Milky Way galaxy?
spiral
What simple machines are found in a pair of scissors?
lever and wedge (not really a screw)