Answer the following question given this paragraph: The speed of sound is the distance that sound waves travel in a given amount of time. The speed of sound in dry air at 20 C is 343 meters per second. Q: What is the distance that sound waves travel in a given amount of time called? Choices: - velocity of sound - momentum of sound - force of sound - speed of sound A:
speed of sound

Answer the following question given this paragraph: The umbra is the part of the shadow in which light is completely blocked. Q: The part of the shadow in which light is completely blocked is called what? Choices: - penumbra - eclipse - corona - umbra A:
umbra

Answer the following question given this paragraph: Wave amplitude is determined by the energy of the disturbance that causes the wave. A wave caused by a disturbance with more energy has greater amplitude. Q: What is determined by the energy of the disturbance that causes the wave? Choices: - wavelength - Ohm - frequency - wave amplitude A:
wave amplitude

Answer the following question given this paragraph: Rutherford's atomic model became known as the nuclear model . In the nuclear atom, the protons and neutrons, which comprise nearly all of the mass of the atom, are located in the nucleus at the center of the atom. The electrons are distributed around the nucleus and occupy most of the volume of the atom. It is worth emphasizing just how small the nucleus is compared to the rest of the atom. If we could blow up an atom to be the size of a large professional football stadium, the nucleus would be about the size of a marble. Q: In an atom, what two major types of particles are located in the nucleus? Choices: - electrons and neutrons - molecules and neutrons - ions and electrons - protons and neutrons A:
protons and neutrons