Earth Science

Question 1

what layers is the earth made up of?

Answer 1

crust/lithosphere, mantle, and core

Question 2

what is the crust?

Answer 2

the outermost layer of the Earth

Question 3

what is the core?

Answer 3

the innermost layers of earth

Question 4

what are the composition layers?

Answer 4

crust, mantle, and core

Question 5

what are the mechanical layers?

Answer 5

lithosphere, asthenosphere, mesosphere and outer core

Question 6

what is the outermost rigid mechanical layer of earth?

Answer 6

lithosphere

Question 7

what layer is under the lithosphere?

Answer 7

asthenosphere

Question 8

what layer is beneath the asthenosphere?

Answer 8

mesophere

Question 9

what layer is the only layer that is a true liquid?

Answer 9

outer core

Question 10

how much gas does nitrogen and oxygen make up in earth’s atmosphere?

Answer 10

99 percent

Question 11

how are mountains formed?

Answer 11

when earth’s tectonic plates are smashing together

Question 12

how are volcanoes formed?

Answer 12

when magma from within earth upper mantle erupts

Question 13

how are canyons formed?

Answer 13

by weathering and erosion

Question 14

what is a seismic wave caused by?

Answer 14

an earthquake

Question 15

how many types of seismic waves are there?

Answer 15

3

Question 16

what seismic is the fastest and can travel through solid, liquid and gases

Answer 16

primary (P)

Question 17

what seismic wave travels through earth’s interior and can travel through rock ?

Answer 17

secondary (s)

Question 18

what are tsunamis caused by?

Answer 18

earthquakes or volcanic activity

Question 19

______ is a mixture minerals, organic matter, gases, liquids, and many organisms that together support life

Answer 19

soil

Question 20

the water cycle is also called the…

Answer 20

hydrologic cycle

Question 21

what are the three difference categories for rock?

Answer 21

igneous, metamorphic and sedimentary

Question 22

what do rocks form?

Answer 22

earth;s outer solid layer

Question 23

what are igneous rocks made from?

Answer 23

lava, magma

Question 24

what are metamorphic rocks made from?

Answer 24

hear pressure

Question 25

what are sedimentary rocks made from?

Answer 25

deposition, cementation

Question 26

is earth the densest planet in the solar system?

Answer 26

yes

Question 27

is the sun considered a star?

Answer 27

yes

Question 28

what is a comet?

Answer 28

a chunk of ice and rock

Question 29

what is an asteroid?

Answer 29

a chunk of rock and metal in orbit between mars and jupiter

Question 30

what is a meteorite?

Answer 30

a small asteroid

Question 31

we have seasons on earth because of what….

Answer 31

earth’s tilt on its axis

Question 32

what does heliocentric mean?

Answer 32

the sun is at the center and planets rotate around it

Question 33

what does the moon affect?

Answer 33

the tides

Question 34

what does a stars color rely on ?

Answer 34

its temperature

Question 35

when does a lunar eclipse occur?

Answer 35

when the moon passes directly BEHIND Earth

Question 36

when does a solar eclipse occur?

Answer 36

when the moves moves in FRONT of the sun

Question 37

what causes cycles on earth?

Answer 37

earths rotation on its axis and revolution around the sun