Composition 15

Question 1

EROSION

Answer 1

the movement or transport of particles away from their source

Question 2

DEPOSITION

Answer 2

the process by which particles accumulate in a new location

Question 3

EARTH’S CRUST

Answer 3

made up of oxygen, silicon, aluminum, iron, calcium, magnesium, potassium and sodium

divided into plates that float on the mantle and are constantly in motion

Question 4

EARTHS’ MANTLE

Answer 4

composed of silicate rocks rich in magnesium and iron

Question 5

EARTHS’ CORE

Answer 5

inner core of iron

outer core of nickel-iron alloy

Question 6

MESOSPHERE(MIDDLE SPHERE)

Answer 6

third highest layer in atmosphere
31 to 50 miles above the surface of the Earth
coldest of the atmospheric layers

Question 7

THERMOSPHERE(HEAT SPHERE)

Answer 7

outer layer in the atmosphere

50 miles above the surface of the Earth to 400 miles

Question 8

TROPOSPHERE

Answer 8

lowest layer of the atmosphere
5 miles at the poles to 10 miles over the equator
all atmospheric water vapor or moisture is found in the troposphere
most of worlds weather takes place

Question 9

STRATOSPHERE

Answer 9

second major layer of atmosphere
10 to 31 miles above
layer in which temperature rises with increasing altitude

Question 10

ATMOSPHERE

Answer 10

79% nitrogen, 20% oxygen, and 1% other gases
made up of four layers 
the Troposphere
the Stratosphere
the Mesosphere
the Inonosphere