8th Science Review

Any force that causes an object to move in a circle is called a(n)

• balanced force

• unbalanced force

• gravitational force

• centripetal acceleration

Rolling friction pushes on an object that is rolling. According to this definition, which of these examples shows rolling friction?

• A & D

• B & A

• D & C

• C & B

The tendency of an object to resist change in its motion is known as

• mass

• inertia

• force

• balance

_________ can change an object's motion.

• Net force

• Balanced force

• Unbalanced force

Tags

NGSS.MS-PS2-2

According to Wegener's hypothesis of continental drift,

• Earth's surface is made of 7 major land masses.

• the continents do not move.

• Earth is slowly cooling and shrinking.

• the continents were once joined together in a single land mass.

Tags

NGSS.MS-ESS2-3

A place where two plates slip past each other, moving in opposite directions, is known as a

• transform boundary

• divergent boundary

• convergent boundary

• rift valley

Mechanical waves are created when a source of energy causes a medium to

• move.

• compress.

• expand.

• vibrate.

Tags

NGSS.MS-PS4-1

The place where two plates come together is known as a

• transform boundary.

• divergent boundary.

• convergent boundary.

• rift valley.

According to the theory of plate tectonics, which layer of the earth is broken into separate sections called plates?

• the lithosphere

• the asthenosphere

• the mantle

• the inner core

Tags

NGSS.MS-ESS2-3

The signals generated by the rods and cones are carried to your brain by the

• cornea

• pupil

• optic nerve

• lens

Tags

NGSS.MS-LS1-8