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Vocab Uno
Vocab Dos
How is Motion Described and Measured?
What is Acceleration?
Why is the Force of Gravity Important?
100
The location of an object.
What is position?
100
A change of position of an object.
What is motion?
100
What is the formula for speed?
speed = distance / time
100
Which causes acceleration? A.) weight B.) inertia C.) force D.) speed
C. Force
100
What type of force causes a gymnast to move toward Earth when jumping off a balance beam?
gravitational
200
A push or pull of any kind.
What is force?
200
The measure of the speed and direction of the motion of an object.
What is velocity?
200
What is the least number of photographs needed to tell if a car is moving?
2
200
Give an example of velocity.
25 mph, west
200
Friction changes ___________ to ____________.
kinetic energy to heat
300
The measure of an object's change in position during a unit of time.
What is speed?
300
Any change in the speed or direction of an object's motion.
What is acceleration?
300
If you had two pictures of boats, I can tell they are moving because of the duck in the water is in two different positions in each picture. I used the duck as my ________________.
frame of reference
300
An accelerator in a car causes a change in the car's ____________.
velocity
300
If we were to travel to the moon, how would our weight and mass change?
Weight would decrease and mass stay the same
400
The property of matter that keeps an object at rest or keeps it moving in a straight line.
What is inertia?
400
1.) The force of attraction between Earth and other objects. 2.) A force that acts between any two objects and pulls them together.
1.) gravity 2.) gravitation
400
Suppose you are going by car to a campground for a vacation. You travel 225 kilometers in 3 hours. Find your speed.
75 km/hr
400
Ms. Hopler pulled a tablecloth out from under Mrs. Pupa's set of dishes without moving the dishes. What property of matter was Ms. Hopler showing? Explain.
inertia- tendency of matter at rest to stay at rest
400
What are the three natural forces?
magnetic, electrical, gravitational
500
A force that resists motion between objects that are touching.
What is friction?
500
A measure of the gravitational force acting on an object.
What is weight?
500
You are a scientist that just finished an experiment on motion. What information about your experiment would you say to another scientist so he/she could check your results?
materials used, procedure, results, observations (unusual or unexpected)
500
Why does a large jet need such a long runway to take off and land?
Because of its large mass, it needs a long time to accelerate to takeoff speed and to slow to a stop
500
Name two ways to reduce friction and one way to increase friction?
Reduce- oiling chains on a bike and water on a water slide Increase- wax on a surf board