things to know for tmrw

Question 1

rock cycle (how igneous rock are formed)

Answer 1

form when hot, molten rock crystallizes and solidifies. The melt originates deep within the Earth near active plate boundaries or hot spots, then rises toward the surface. (crystallization, metamorphism, and erosion and sedimentation.)

Question 2

difference between intrusive and extrusive igneous rock

Answer 2

Extrusive rocks are formed on the surface of the Earth from lava, which is magma that has emerged from underground. Intrusive rocks are formed from magma that cools and solidifies within the crust of the planet.

Question 3

sedimentary rock

Answer 3

formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth’s surface. Sedimentary rocks often have distinctive layering or bedding.

Question 4

igneous rock

Answer 4

types of rocks that are formed when molten rock (rock liquefied by intense heat and pressure) cools to a solid-state.

Question 5

metamorphic rock

Answer 5

rocks that have become changed by intense heat or pressure while forming. In the very hot and pressured conditions deep inside the Earth’s crust, both sedimentary and igneous rocks can be changed into metamorphic rock.

Question 6

shield volcanoes

Answer 6

basic lava, which is non-acidic and very runny.
gentle sides as the lava flows for long distances before it solidifies.
no layers, as the volcano just consists of lava.
less violent eruptions.
shorter periods between eruptions.

Question 7

composite volcanoes

Answer 7

Acidic lava, which is very viscous (sticky).
Steep sides as the lava doesn’t flow very far before it solidifies.
Alternate layers of ash and lava. For this reason, they’re also known as stratovolcanoes . …
Violent eruptions.
Longer periods between eruptions.