Forces & Motion
_______ is a push/pull on an object that results in a change in motion.
Opposites...
attract
Moving energy
Kinetic
The height of my wave from the _______ point is known as the __________
The ____ illuminates the moon
Sun
______ is the force when two objects are in contact with each other, and are moving. Ex. a book sliding on a table
Friction
Like poles...
repel
Stored Energy
Potential
What are the two ways I can measure wavelength?
peak-peak or valley-valley
In outerspace, the moon is always ___ lit.
1/2
A bowling ball and a ping pong ball are both moving at the same speed. Then I apply an equal force to both objects. If the ping pong ball stops, what will be true about the bowling ball?
It will slow down, but not stop. The same force has a lesser impact because the bowling ball is more massive.
If magnets have field lines that do not touch, they are...
repulsive
A a boulder rolls down a hill, the PE ______ and the KE ____________
decreases; increases
How many waves travel past an invisible marker in one second; also known as the "speed"
frequency
During an eclipse, the _____ blocks the ______.
earth; sun
Two toy boats are moving at the same speed. An equal force is applied to both. Boat A stops, Boat B slows down. What must be true about each boat's mass.
The mass of boat B is bigger than the mass of Boat A.
If magnets have field lines that extend from one pole to the other on OPPOSITE magnets, then they are...
attractive
In a set of magnets, as two repulsive magnets move towards each other, the PE ______
increases
If my amplitude is larger, I have ___________ energy
more
new
Two rubber ducks of equal mass collide. One flys backwards moving 2 m/s, the other continues to move forward at a reduced speed. What must be true about the initial velocities of the rubber ducks?
The one that reduces its speed was moving much faster than the one that slowed down.
the magnets are close together/touching
Two repulsive magnets are held in place 1 mm apart. They are then released. Describe the changes in KE & PE.
As they move further away, the PE goes down, and the KE goes up.
When a light has more energy, its more likely to _______ reflect, absorb OR transmit
transmit
The cycle of the moon we see on earth depends on the __________ of the moon around earth
position