What caused the change in the fireballs velocity as it traveled

True or false, the three major scales used to measure earthquakes are mercalli scale, richter scale and magnitude scale

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.