science mid-term Flashcards
(13 cards)
What is a force
pushes or pulls that can change an object’s motion.
What is Newton’s third law
for every action, there is an equal and opposite reaction.
What is momentum
the product of an object’s mass and velocity
What is an elastic collision
both objects involved in the collision rebound, and the total kinetic energy remains the same
What is kinetic energy
the energy of motion. In collisions, the amount of kinetic energy depends on the mass and speed of the objects.
What is an inelastic collision
some kinetic energy is transformed into other energy forms, and the objects may stick together
what type of wave is a sound wave
mechanical, longitudinal wave
what is frequency/ what it does
- the number of vibrations per second
- makes the pitch of a sound higher or lower
what is amplitude/ what it does
- the height of the wave
- makes the loudness of a sound higher or lower
what is reflection
When sound bounces off a surface
what is absorption
When sound is absorbed by a material and converted into other forms of energy, like heat.
what is transmission
When sound passes through a material without being absorbed or reflected.
what is a wavelength
the distance between two consecutive compression
