Mechanical Waves
The matter that a mechanical wave travels through.
What is a medium?
The times that waves reach a boundary between two media and bounce back and when a wave passes through the boundary between two media.
What is reflection and transmission?
Something that is always attractive, a noncontact force between objects that have mass.
Newton's three Laws of Motion.
What is the... 1st law- An object at rest stays at rest, and an object in motion stays in motion with a constant velocity unless acted on by unbalanced forces.
2nd Law- An object’s acceleration is equal to the net force on the object divided by its mass. (F=ma).
3rd Law- For every action there is an equal and opposite reaction.
This is how you measure density.
What is the amount of mass per unit of volume? Or (g/mL).
A wave in which the matter moves in a pattern perpendicular to the direction that the wave travels
What is a transverse wave?
A wave bends as it is transmitted from one medium into another medium because it changes speed.
What is refraction?
Acceleration due to gravity.
What is 9.8 m/s²?
The velocity of a red car traveling west from 50 m to -25 m in 5 seconds.
What is 15 m/s west?
Rohrer and Binnig had to define their criteria for the STM precisely. Name the three 3 criteria they had to meet.
The STM had to allow them to see, measure, and move individual atoms.
In detail...It needed to have a resolution of at least 100 picometers so that it could see individual atoms. (100 points for any group with this specific info.)
The highest and lowest points of the S-shaped transverse waves.
What is the crest and trough?
A straight arrow that represents the direction a light wave travels.
What is a light ray?
The path that an object in space follows around another object due to gravitational forces.
What is an orbit?
Describe the motion of objects that are viewed from your reference frame, both inside and outside, while you travel inside a moving vehicle.
What is motionless from the inside and moving quickly on the outside?
The positive, negative, and neutral charges of an atom.
What are protons, electrons, and neutrons?
A wave in which the matter moves in a pattern parallel to the direction that the wave travels.
What is a longitudinal wave?
A curved transparent object that bends light in specific ways.
What is a lens?
Two factors that affect the strength of gravitational forces.
What is mass and distance?
This describes the interacting forces in a system. They are not always easy to identify because the effect of one may not be easily seen.
What is a force pair?
Scientists report atomic mass in a unit of measurement called...
Daltons (Da)
The distance between the start of one wave cycle and the start of the next wave cycle.
What is a wavelength?
In order to muffle sounds in a room, people will often put soft materials on the walls or floor, such as carpet or fabric wall hangings. Explain why these materials help make a room seem less noisy using the concepts of reflection, transmission, and absorption.
What is the reduction of the amount of energy being reflected back from the walls and floor, and absorption, preventing the transmission of sound from outside the room?
The field lines of a gravitational field diagram at a certain location in your model are far apart.
What is the weakest strength of the gravitational field?
The equation and unit of measurment for average acceleration.
What is ending velocity minus starting velocity divided by time? The unit of measurement is m/s2.
The periods and groups of the periodic table of elements show this...
Periods show the number of electron energy shells, and groups show the number of valence electrons (electrons on the outermost shell).