Lesson 1
Besides a strength, or magnitude, what does every force have?
direction
What happens when an object accelerates?
its speed or direction changes
A ball rolled across four different surfaces with the same force. Which surface (tile floor, paved road, grassy field, cement sidewalk) will slow movement of the ball the most?
grassy field
When the sun is low in the sky early in the morning, trees form what kind of shadow?
long shadows
The first NBA game was played between the New York Knicks and the Toronto Huskies in what year?
1946
What always happens when the forces acting on an object are equal in strength and opposite in direction?
the motion of the object does not change
How do electric and magnetic forces act on different objects?
they either push or pull objects
When you ride a roller coaster, what makes your body rise out of its seat at the top of a hill?
inertia
______ is shade cast by an object in the path of light.
Shadow
The National Basketball Association was originally called what?
The Basketball Association of America
_____ is the force of attraction between any two objects.
Gravity
_______ is the rate at which the speed or the direction of motion of an object changes over time.
______ is two forces of equal strength that combine to act on the same object but in opposite directions.
Balanced
_____ is the form in which light energy travels.
Waves
Which NBA team has made the most appearances in the finals?
Los Angeles Lakers (32 appearances)
______ the force that results when two materials rub against each other.
Friction
______ is the tendency of an object to resist any change in motion.
Inertia
_____ _____ is the total of all the forces acting on a body.
Net Force
_____ is a form of energy.
Light
Who is the only active NBA franchise with multiple Final appearances, with no losses?
Chicago Bulls
* Describe a contact force and non-contact force that affects the motion of a baseball after a pitcher has thrown the ball?
air resistance, a contact force, slows a baseball as it moves through the air, and gravity, a non-contact force, gradually pulls the baseball down.
_____ _______ is motion where the speed and direction do not change.
Uniform Motion
* You are building a wooden car to enter in a downhill race. What can you do to make the car go as fast as possible?
Making the car heavier will help it move faster downhill, and giving it smooth, compact shape will reduce air resistance.
What happens to cause a shadow on the ground when the sun is shining brightly?
an object blocks the sun's rays from reaching the ground.
What NBA team has made the most franchise Final appearances without winning a title?
Phoenix Suns