Vocabulary
A change in an objects position?
What is motion?
What force pulls objects towards Earth?
What is gravity?
A student watches a bird fly from a tree to a nearby fence. What changed about the bird to prove that the bird was in motion?
What is its position?
What type of energy does a moving object have?
What is kinetic energy?
A student notices a toy car travels faster on tile than carpet. Is this an observation or a conclusion?
What is observation?
The speed and direction of an object?
What is velocity?
Two teams are playing tug-of-war. Both teams pull the rope with the exact same strength, so the rope does not move at all. What kind of forces are these?
What are balanced forces?
How do you determine the speed of something?
What happens to a balls potential and kinetic energy as it rolls down a hill?
What is potential energy decreases and kinetic energy increases?
What is something that is manipulated in an experiment called?
What is a variable?
Objects in motion stay in motion because of?
What is inertia?
A boy pushes on a box and moves it across the room. What is this an example of?
What are unbalanced forces?
The third law of motion says that for every action...?
What is there is an equal and opposite reaction?
2 types of energy that occur during a collision are?
What is sound and thermal energy?
A student tests a toy car three times on a smooth surface and gets 4 m, 5 m, and 4 m. Why is it useful to do multiple trials?
What is reliability?
A force between surfaces that slows objects or stops them from moving?
What is friction?
True or false: When you kick a ball, the amount of force your foot puts on the ball is different than the amount force the ball puts on your foot?
What is false?
True or false. Acceleration can only mean to speed up.
What is false?
What type of energy transfer occurs in your stomach when you eat a slice of pizza?
What is a chemical reaction?
A student wants to find out whether the surface of a ramp affects how far a toy car travels. They test carpet, tile, and wood. What is the variable they are changing?
What is the surface of the ramp?
Stored energy that is released when links between particles that make up matter are broken?
What is nuclear energy?
When a rock is thrown into water, what type of force from the water causes the rock to slow down?
What is drag force?
Car A travels 8 meters per second. Car B travels 4 meters in the first second, 8 meters in the second second, and 12 meters in the third second. Which car is moving at a constant speed?
What is car A?
Two balls are sitting at the top of the same ramp at the same height. Ball A has more potential energy than Ball B. Why?
A student wants to test whether the amount of force used to push a toy car affects how far it travels. They push one car gently and another car hard, but they use different cars. Why is this a problem with the experiment?
What is they changed more than one variable?