Heat: v1

PHASES OF MATTER: When something is colder, its molecules are moving slower than something is hot.

METEORITES & HEAT: Can iron be a gas? Yes. Meteorites vaporize.
There are different kinds of meteorites, but one kind has iron and nickel. If you
vaporize parts of it, the metals iron and nickel become a gas.

METEORITES & HEAT: A meteorite is a chunk of ice, rock or metal that
enters the earth’s atmosphere. A meteor is one that strikes the earth.

METEORITES & HEAT: Some meteorites make craters like the 3,900 foot
wide, 560-foot deep Meteor Crater in Arizona. This crater in Arizona was hit by a
nickel-iron meteorite 160 feet across. It hit the Arizona countryside traveling at the
astonishing speed of 8-12 miles PER SECOND!

METEORITES & HEAT: The meteorite that hit in Arizona had so much power
that it created a crater 20 times wider than itself and vaporized on impact!

METEORITES & HEAT: Only 15% of meteorites are nickel-iron. 85% are
mostly rock.

METEORITES & HEAT: Even though nickel-iron meteorites can weigh
hundreds of tons, the 3000oF heat generated by friction with the earth’s air
molecules usually breaks them up before impact.

METEORITES & HEAT: The moon is 30% covered by black maria on the far
side that we don’t see and only 2% on the near side that we do see.

METEORITES & HEAT: This black Maria on the moon are impact basalt
basins filled with lava flows coming from the deep cracks in the moon caused by
the meteorite collisions.

METEORITES & HEAT: The North Pole-Aitken meteorite impact crater on
the moon is the largest in the Solar System. It’s 1600 miles across! You could fit
half the United States into it!