Dwayne is investigating the ripple speeds in
a ripple tank. Dwayne sets up a camera
above the ripple tank so that he can capture
a precise state of the water.
1.1
Why might Dwayne make measurements from an
image?
1 mark
A) The speed is too fast to see without an image
B) He can run several experiments at one time
C) It is hard to take measurements of a moving wave
D) He can leave the tank and come back to
it later