Collisions
What is it called when 2 objects come into contact with eachother?
What is the transfer of thermal energy from a hotter object to a colder object called?
heat or thermal energy
What is a reflex?
A quick, automatic response to stimulus
What are the 2 ends of a magnet called?
Poles
What type of energy does an object have because it is moving?
When 2 objects collide, what can happen to their speed or direction?
They can speed up, slow down, or change direction
What type of energy does a battery store that can be converted into electrical energy?
Chemical energy
Components of the CNS
Brain and Spinal Cord
What happens when 2 North Poles are brought together?
They repel
If a car speeds up, what happens to its kinetic energy?
It increases
What is one safety feature in a car designed to reduce injuries during a collision?
An airbag
A ball is held at the top of a hill. What type of energy does it have because of its position?
Gravitational or Potential Energy
Which part of the nervous system usually coordinates a simple withdrawal reflex?
Spinal Cord
What is the invisible region around a magnet where magnetic forces act called?
A magnetic Field
Two cars move at the same speed, but one has more mass. Which has more kinetic energy?
The car with the more mass
When a rocket pushes exhaust gases downward, what happens to the rocket, according to Newton’s Third Law?
The rocket is pushed upward.
A roller coaster reaches the bottom of a hill. What happens to its potential energy as it moves downhill, assuming friction is negligible?
It is converted into Kinetic Energy
Order the Reflex Arc Correctly
Stimulus->sensory pathway-> spinal cord-> motor pathway -> muscle
Which type of material is strongly attracted to a magnet: iron, plastic, or wood?
Iron
What is the formula for KE?
KE= 1/2mv^2
During a collision, a moving car hits a parked car. The parked car experiences a force from the moving car. What force does the moving car experience in return?
An equal force in the opposite direction
A flashlight is turned on using a battery. What are the three main energy transformations that occur as the flashlight produces light?
Chemical energy → electrical energy → light energy (and thermal energy).
Which part of the central nervous system coordinates a withdrawal reflex?
Spinal Cord
What happens to the magnetic force between two magnets as the distance between them increases?
It weakens
mass- 2x
speed- 4x, x^2