ROCKS

Question 1

geologists study rocks

Answer 1

composition color rock’s texture

Question 2

rocks contain

Answer 2

mineral mixtures +other materials or 1 mineral

Question 3

color

Answer 3

clues to mineral composition

Question 4

texture

Answer 4

look & feel of surface, made up of grains

Question 5

igneous

Answer 5

magma or lava cools crystallizes granite

Question 6

extrusive

Answer 6

small fine grain hard to see crystals

Question 7

intrusive

Answer 7

large coarse grain interlocking crystals 无规则颗粒

Question 8

sedimentary rock

Answer 8

sediments dissolved in water pressed and compacted together.

Question 9

sediments

Answer 9

minerals, rock pieces, remains of organisms

Question 10

clastic

Answer 10

rounded pebbles, sand, clay particles formed by weathering

Question 11

non clastic

Answer 11

chemical reactions, mostly in ocean, smooth

Question 12

metamorphic

Answer 12

any rocks changed by heat, pressure, or chemical reactions

Question 13

foliated

Answer 13

grains arranged in long flat parallel layers or bands

Question 14

non foliated

Answer 14

grains are arranged randomly

Question 15

rock cycle

Answer 15

processes that change one type of rock into another