A
What are the four ways to observe motion?
distance, time, speed, and direction
What is the term used to describe the location of an object?
position
The amount of space between two objects or places is __________ ?
distance
_______ tells which way a line points from one object or place to another.
direction
_______ is the process of changing position.
motion
A slide is an example of which object that you learned in this term?
ramp
A force is a ______ or a _______ upon an object.
push, pull
What is the pattern of motion when you are on a swing?
back and forth
The words forward and backward describe an object's __________.
direction
What type of force will cause a moving object to slow down?
friction
A buildup of electrical charges is called ________
static electricity
The sled is moving faster and changing direction because the dogs are applying a(n) ____________ to the sled.
unbalanced force
True or False
A basketball sitting on the ground has no force acting on it.
False
Two balloons rubbed with wool will _________ each other.
repel
True or False
An object changes in location will cause the object changes in motion.
True
A car is driving at 60 km/h. The forces acting on it are ________.
balanced
position
To lift a cell phone off a table will need a force that is ___________ gravity.
stronger than
A ball would roll farther on an icy surface than classroom floor is because______
the friction on the icy surface is less / classroom floor has greater friction
True or False
Two charges always repel each other.
False
Explain why a sock might stick to a sweater after the clothes have been removed from the dryer.
When the dryer is working, the clothes rubbed with each other exchanging charges. One cloth has negative charges and the other has positive charges. These opposite charges attract each other making them stick together.
Explain how to figure out if the forces that are acting on an object are balanced or unbalanced.
If the object is not moving/moving without speeding up/slowing down/changing direction, the forces must be balanced. If it is speeding up/slowing down/changing direction the forces must be unbalanced
A marble has to roll down a ramp and then travel a distance of 3 m. The ramp's height is supported by 4 books. When the marble rolls down, it travels only 2 meter. How can the ramp be modified to increase the distance the marble travels?
add more books to the height of the ramp. The higher the ramp, the farther the marble will go.
What happens to charged particles when two objects touch?
they can move from one to the other
True or False
Lightning occurs because of buildup of electrical charge in the clouds.
True