1. A pebble is thrown into a calm lake, ripples are formed from the center and move outward. The water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels What?
A) diagonally

B) downward

C) horizontally

D) upward

2. X-rays, UV light waves, Sound waves, Earthquake waves
All of these have which characteristic in common?
A) They all transmit energy

B) They are all pressure waves

C) They all need a medium to be transmitted

D) They are all part of the electromagnetic spectrum

Question

1. A pebble is thrown into a calm lake, ripples are formed from the center and move outward. The water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels What?
A) diagonally

B) downward

C) horizontally

D) upward

2. X-rays, UV light waves, Sound waves, Earthquake waves 
All of these have which characteristic in common? 
A) They all transmit energy

B) They are all pressure waves

C) They all need a medium to be transmitted

D) They are all part of the electromagnetic spectrum