A) bumps
B) plates
C) humps
D) faults

A) 90 degrees F
B) 9,000 degrees F
C) 900 degrees F
D) 9 degrees F

A) plate
B) inner core
C) mantle
D) outer core

A) the back of an elephant
B) a jigsaw puzzle
C) an exploding bomb
D) gooey oatmeal

A) People have dug to the center of the earth.
B) There are no mountains under the ocean.
C) The earth's plates have drifted apart.
D) The earth's crust is made of metal.

A) a place underground breaking away from another plate
B) outer layers of the earth pressing down on the inner core
C) magma forcing the earth's crust into a dome
D) a huge wave traveling miles through the ocean

A) work outward like ripples from a stone thrown in a lake
B) go around in circles like a ball at the end of a string
C) shoot up like flames from a fire
D) build up a wall of mud sliding into a building

A) most of them
B) all of them
C) a few of them
D) none of them

A) ridge
B) dome
C) fold
D) block

A) magma will bulge up under the crust and cause a bump
B) it sits on cracks in a plate
C) India continues to push northward
D) wind will shape huge ridges

A) an explosion
B) sandpaper
C) a flood
D) a blizzard

A) to explain what is happening to the earth
B) to explain weather
C) to warn people about dangerous places to live
D) to scare people