When the strings of a violin are plucked, they vibrate. These vibrations are transferred to particles in the air. What kind of energy do these vibrating particles have?
o electrical energy
O mechanical energy
O chemical energy
O nuclear energy

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

The place where two plates come together is known as a a. transform boundary. b. divergent boundary. c. convergent boundary. d. rift valley.

Which pair below describes isotopes of the same element? a) an atom with 6 protons and 8 neutrons - an atom with 8 protons and 6 neutrons b) an atom with 6 protons and 6 neutrons - an atom with 6 protons and 7 neutrons c) an atom with 8 protons and 8 neutrons - an atom with 7 protons and 8 neutrons d) an atom with 7 protons and 6 neutrons - an atom with 6 protons and 6 neutrons