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Ms. Hunter Semester Test 2
Terms in this set (56)
Who? The buoyancy shown by ducks and other water flow.
Who? Why umbrellas turn inside out.
Who? Why water squirts from the top of an open plastic bottle when its is squeezed.
What kind of friction occurs as fish swims through water?
What is the formula to calculate speed?
Acceleration can occur if there is a change in___________or_________.
speed and direction
What is the Universal Law of Gravitation?
Every object attracts every other object.
How will increasing the mass of one object affect the force of attraction between the two objects?
Increasing the mass will increase the attraction.
How will increasing the distance between two objects affect the force of attraction between two objects?
Increasing the distance will decrease the attraction force.
What is a reference point?
A basis or standard.
Hydraulics would be an example of which principle?
What are the units for length, velocity, acceleration, momentum, force, and energy?
m, m/s, m/s^2, kgm/s, N, J
Birds flying is explained by who's principle?
The slope of a distance vs. time graph would be_____________.
The slop of a speed vs. time graph would be___________________.
Convert 400 meters to km.
Convert .000078 kg to mg.
What is one example of Newton's First law of motion?
What is one example of Newton's Second law of motion?
What is one example of Newton's Third law of motion?
Leaning on a wall
The pressure of a fluid at a specific depth depends on what two things?
Density and depth.
You can show the motion of speed on a line graph by plotting what two variables? On which axis would you plot them?
Distance on the x axis & time on the y axis.
Give some examples of vector quantities.
Acceleration, velocity, momentum, and force.
What two variables would you plot if you were graphing acceleration and on which axis would you plot them?
Speed on y axis & time on x axis.
What is Sir Isaac Newton known for?
His laws of motion.
Write of following in scientific notation; A: 280,000 B: .0000076.
A: 2.8x10^5 B: 7.6x10^-6
What is the equation for calculating momentum?
What is a conversion factor? Give an example.
Converting on measurement to another. 24in. ---> 2ft.
What do these prefixes equal? Kilo, centi, milli, micro, nano, Mega, and Hecto.
1000, .01, .001, .000001, .000000001, 1000000, 100
Which law (Newton)? A person sitting in a boat tosses a heavy anchor in one direction. The boat moves in the opposite direction.
Which law (Newton)? A car skids on an icy curve.
Which law (Newton)? An athlete can throw a baseball farther than a shot-putt.
A book placed vertically on one side rather than on the flat side exerts more pressure on the table. Which principle would apply? Explain.
Pascal's. With less area covered, it applies more pressure.
Stored energy or energy due to position is know as what?
The formula for calculating potential energy is what?
The three factors that determine the amount of potential energy in an object are what?
Height, mass, and acceleration.
Potential and Kinetic energy is measured in what?
For force and energy, mass must be measured in units of what?
Energy of a compound that changes as its atoms are rearranged to form new compounds is what?
The total energy of all the particles that make up an object is called what?
The value of the g constant (the acceleration of all objects due to gravity) on earth is what?
Height is measured in what?
Energy of motion is known as what?
What is the formula for kinetic energy?
Ek=1/2(mv^2) or Ek=.5(mv^2)
The two factors that determine the amount of kinetic energy in a object are what?
Velocity & mass
Velocity is measured in what?
Which has seconds squared? Velocity or acceleration?
The SI (metric) unit for energy is what and what is the symbol?
The thermal energy of a substance changes with the ___________of its particle.
An____________________________is a change from one form of energy into another.
What force always opposes motion?
As an object falls freely, the kinetic energy of the object does what?
The equation, E=mc^2 proposed by the scientist ___________ ___________ and the 'c' represents the_______________________.
Albert Enstein & Speed of light
If the velocity of an object doubles, its kinetic energy does what?
A Ferris wheel moving at constant speed is accelerating because the Ferris wheel is doing what?
Name one contribution of each scientist. Galileo, Archimedes, Bernoulli, Aristotle, Pascal, and Einstein.
Discovered Earth went around the Sun, Buoyancy, Air pressure, made discoveries through observation, Hydraulics, and Special Theory of Relativity.
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