Sound
Light
Newton's Law (1)
Newton's Laws (2)
Vocabulary
100
How does sound travel?
Waves
100
Is a prism an example of reflection or refraction?
Refraction
100
Newton's _______ Law of Motion states that objects in motion will stay in motion or an object at rest will stay at rest unless acted on by a force.
First
100
Newton's ____ Law of Motion states for every action there is an equal but opposite reaction.
Third
100
An object in motion has what type of energy?
Kinetic Energy
200
Compare the appearance of a low pitch vs. a high pitch wave.
Low pitch waves are longer and move slower. High pitch waves are shorter and move quicker.
200
Why does a stop sign appear red?
Red is reflected back at our eyes and all the other colors are absorbed.
200
Force is measured in what?
Newtons
200
A softball and a volleyball collide with equal speed, and then they accelerate at the same rate. What must be true about the masses of the objects?
They have equal masses.
200
How high or low a sound can be is called what?
Pitch
300
Why do we see lightening before we hear thunder?
Light travels faster than sound.
300
In tropical locations, the roofs of homes are often painted white to prevent the temperatures inside the home from getting too hot. Explain why that works.
The white paint would reflect the sunlight and absorbs less heat.
300
True or False: When more force is applied, there will be a smaller change in motion.
False. An object will have a greater change in motion when more force is applied.
300
A car travel 60 miles in 2 hours. What was the speed of the car?
30 miles per hour
300
A factor in an experiment that changes is called what?
A variable
400
What happens when we hear an echo?
Sound is reflected off a surface and repeated back
400
Why does a pencil in water appear to be bent?
The light is refracted when it travels through water (a medium) which makes it appear to be bent.
400
What makes your body move sideways when you are riding in a car that makes a sharp turn?
Inertia because your body wants to continue moving in the direction the car was moving in before making the turn.
400
Identify 3 ways the motion of an object can be changed.
speed up, slow down, change direction
400
The resistance that one surface or object encounters when moving over another is called?
Friction
500
Based on what we know about sound, why is Star Wars not accurate?
Sounds does not travel in space because there is no medium for it to travel through.
500
Give an example of an opaque, transparent, and translucent object.
Answers will vary.
500
Would the blocks get to the finish at the same time? If yes, explain why. If no, explain how you would change it so they do?
No, they would not get to the finish at the same time. You would have to switch the amount of forces. You would have to apply more force to the 20g weight and less to the 10g weight.
500
An 350 kg truck accelerates at a rate of 8 m/s. What is the force?
F=m x a
F=350 x 8
F= 2,800 N
500
The tendency for an object to continue moving in the same direction is called what?
Inertia