Random Facts
Are igneous rocks formed by volcanoes?
YES! THEY ARE FORMED BY COOLING MAGMA AND MOLTEN.
Why are igneous rocks formed by volcanos?
BECAUSE THE VOLCANOS PRODUCE HOT ENOUGH HEAT FOR THE THE ROCKS TO FORM. (also creates magma and lava)
What are the two types of igneous rocks?
EXTRUSIVE AND INTRUSIVE
What two examples did we talk about during the presentation?
GRANITE AND PUMICE
There are 3 types of igneous rocks. (not examples/kinds) *TRUE OR FALSE*
FALSE, THERE ARE 2 (intrusive + extrusive)
Which planets moon surface is made of igneous rocks? (the earths moon, saturns moon, etc)
THE EARTHS MOON
What part of the Earths crust are igneous rocks found?
LOWER CRUST
What does INTRUSIVE mean?
TO BE FOUND UNDERGROUND. FORMED BY COOLING MAGMA.
How many examples/kinds of igneous rocks are there?
THERE ARE OVER 700!
Most igneous rocks are found underground. *TRUE OR FALSE*
TRUE
What does "fire-born" mean?
FORMED FROM COOLING MOLTEN AND INTENSE HEAT
Why are most igneous rocks found underground?
BECAUSE OF THE INTENSE HEAT
What does EXTRUSIVE mean?
TO BE FOUND ABOVE SEA LEVEL/SURFACE. FORMED BY VOLCANIC ERUPTIONS
Is granite intrusive or extrusive?
INTRUSIVE BECAUSE IT IS FORMED BY COOLING MAGMA UNDERGROUND
Igneous rocks are made from cooling magma and intense heat. *TRUE OR FALSE*
TRUE
What planets crust has some igneous rock in it?
EARTH
What part of the Earth's mantle are igneous rocks found in?
What texture are most igneous rocks?
A FINE-GRAINED AND APHANITIC TEXTURE
Is pumice intrusive or extrusive?
EXTRUSIVE BECAUSE IT IS FORMED BY VOLCANIC ERUPTIONS ABOVE SEA LEVEL OR ABOVE EARTHS SURFACE
Igneous rocks are made of just grains (no minerals). *TRUE OR FALSE*
FALSE
Name at least ONE mineral in igneous rocks
FELDSPAR,QUARTE, FELDSPARTHOIDS, OLIVINES, PYROXENES, AMPHIBOLES, AND MICAS
Can volcanoes that are not active create igneous rocks?
THERE HAS TO BE HARDENED LAVA/MAGMA FOR A IGNEOUS ROCK TO FORM SO IF IT IS NOT ACTIVE THERE MAY NOT BE COOLED LAVA FOR THE ROCK TO FORM ---> MOST LIKELY, A NON-ACTIVE VOLCANO CAN'T CREATE IGNEOUS ROCKS
The grains in igneous rocks aren't visible to the _________
HUMAN EYE
Name at least THREE examples/types of igneous rocks
BASALT, PUMICE, OBSIDIAN, RHYOLITE, SCORIA, DACITE, GRANITE, GABBRO, DIABASE, DIORITE, PEGMATITE, AND PERIDOTIE.
Some igneous rocks are some of the hardest rocks you can find on Earth! *TRUE OR FALSE*
TRUE: ONE OF THE HARDEST IS GRANITE