Vocabulary
If two equal and opposite forces are applied to an object, the force is ______________________________.
what is balanced force?
Mason built a ramp. He puts car A at the bottom of the ramp and car B at the top of the ramp. He releases car B from the top of the ramp. Which of these statements are true?
a. Car B will stop at the end of the ramp because of inertia.
b. Car A will begin to go up the ramp because of the gravitational pull.
c. Car B will collide with car A causing a transfer of energy.
d. Car A will begin to lose energy.
c. Car B will collide with car A causing a transfer of energy.
If you rub your hands together quickly you create heat. Why does this happen?
You are causing friction which is transformed into energy, causing heat.
another name for potential energy is energy of motion.
true or false
false
________________ is the ability to work.
A runner is running at full speed at a track meet. At the end of the race he stops running. Describe the energy transformation.
What is kinetic energy to potential energy?
Which describes a change that will likely occur in the collision below? Explain.
a. Kinetic energy will be transferred from the nail to the hammer, causing the hammer to move.
b. Kinetic energy will be transferred from the hammer to the nail, causing the nail to move.
c. Potential energy will be transferred from the nail to the hammer, causing no change in motion.
d. All the kinetic energy will transform into light energy and no change in motion will occur
b. Kinetic energy will be transferred from the hammer to the nail, causing the nail to move.
The hammer is swinging (kinetic energy). The hammer is colliding with the nail (collision). The energy from the hammer (kinetic energy) is transferred to the nail, this caused the nail to move.
If a roller coaster is travelling up a ramp, it is gaining kinetic energy because it is slowing down.
false
________________ occurs when two or more objects hit each other with a force.
What is friction?
Tess rubs a piece of wood with sandpaper. She touches the piece of wood with her hand when she stops rubbing it. It feels hot. What is this an example of? Why did the wood feel hot?
What is friction? What is transferred energy?
What is an example of friction? Explain how you know its friction.
Examples:
Feet scooting against carpet
Rubbing hands together
An elephant and a fox are both running 20 miles per hour. The fox and the elephant have the same momentum. True or False
false. The elephant has more momentum because the more mass an object has the more momentum it has.
______________ is the tendency of an object in motion to stay in motion or the tendency of an object at rest to stay at rest.
What is inertia?
A scooter and a truck are travelling down a hill. Both are traveling at the same speed. Which one has more momentum? Explain how you know.
The truck has more momentum because the more mass an object has, the more momentum it will have when it is in motion.
What is a collision? Provide one example of a collision.
occurs when two or more objects hit each other with a force.
Examples:
- car crash
- bat hitting a baseball
- high five
A runner is running at full speed at a track meet. At the end of the race he stops running. Describe the energy transformation. How do you know?
a. kinetic energy to potential energy
b. sound energy to kinetic energy
c. potential energy to kinetic energy
d. kinetic energy to gravitational force
kinetic energy to potential energy. The energy while the runner is in motion is kinetic energy, however when the runner begins to slow down and stop, he is now using potential energy.
Energy can not be created or destroyed, it can only be transformed or transferred is the ___________________________________.
What is the law of conservation of energy?
A teacher is typing on her keyboard. The force behind her fingers pushes down the keys forcing them downward. The spring underneath the keys also has a force. This is what helps the keys bounce back up. The act of her fingers and the keys hitting each other is an example of what?
What is a collision?
Which describes a change that will likely occur in the collision of a hammer hitting a nail?
a. Kinetic energy will be transferred from the nail to the hammer, causing the hammer to move.
b. Kinetic energy will be transferred from the hammer to the nail, causing the nail to move.
c. Potential energy will be transferred from the nail to the hammer, causing no change in motion.
d. All the kinetic energy will transform into light energy and no change in motion will occur.
b. Kinetic energy will be transferred from the hammer to the nail, causing the nail to move.
BONUS. THIS QUESTION GETS AN EXTRA 100 POINTS.
Where is Ms. Diaz at today?
What is "New Teacher Academy"