SCI 8 4th 9 Weeks Exam

The primary light colors are ___.

• magenta, cyan, and yellow

• red, blue, and green

An unbalanced force acting on an object causes it to ___.

• move at constant speed

• accelerate

The image formed by a ___ is always right-side up and smaller than the object.

• concave mirror

• convex mirror

The number of waves that pass a certain point in one second is the wave's ___.

• frequency

• amplitude

The color ____ is produced by blending the three primary pigments.

• cyan

• black

The upward force on an object falling through the air is ___.

• air resistance

• inertia

The statement "for every action, there is an equal but opposite reaction" is a statement of ___.

• Newton's third law

• the law of conservation of momentum

Vibrating charged particles make ___ fields.

• electric

• magnetic

• radio

• both a and b

Which of the following is a force?

• momentum

• friction

The primary pigment colors are ___.

• magenta, cyan, and yellow

• red, blue, and green