The variable that is being tested or changed

• independent variable
• dependent variable
• control variable

The variable that is being measured

• independent variable
• dependent variable
• control variable

A 2 kg ball at rest experiences two forces. What is the net force?

• 28.6 N to the left

• 28.6 N to the right

• 2.2 N to the left

• 2.2 N to the right

A student pushes a book across a table with a constant force. How would the acceleration of the book change if the mass were doubled, but the force remained constant?

• Acceleration would double

• Acceleration would multiply by 4

• The acceleration would decrease by half

• The acceleration would not change

Which best describes what's happening in the first three seconds of the graph?

• The ball is rolling uphill

• The ball is rolling at a constant speed

• The ball is slowing down

• The ball is not moving

What do waves transmit?

• Matter, not energy

• Energy, not matter

• Matter and energy

• Nothing

Two waves approach each other. What will be the new amplitude (half the height of the wave) when the two crests meet? (Hint: constructive interference)

• 20 cm

• 35 cm

• 15 cm

• 5 cm

When a wave enters a new medium at 60⁰ and changes speed, the wave...

• bends because one side changes speed before the other

• bends because both sides change speed

• doesn't bend because the angle is less than 90⁰

• does not bend because one side changes speed before the other

Which of the following waves has the highest frequency?

• 1

• 2

• 3

• 4

You view an American flag through a green filter (only allows green through). What colors can you see?

• green and blue

• red and black

• blue and red

• black and green