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Physics Prt 4: Fill in the Blank
Terms in this set (117)
No physical object can travel faster than___________________________________________.
the speed of light in a vacuum. (Maximum speed is finite).
The ratio of space to time for light ..............................................
..........is the same for all who measure it.
The __________________________ states that the laws of physics are the same for all observers moving uniformly
Principle of relativity
A horizontal stretched spring weighs ____________________________ (more than, less than, the same as) an identical spring that is unstretched.
The closer a spaceship approaches the speed of light,____________________________
The shorter it becomes.
Since light must be the same speed for all observers even though it is affected by gravity, this means that gravity must also affect the rate at which _________________ flows.
Gravity is not a force, but a ____________________________
curvature in space-time
The practicality of space travel close to the speed of light is..............................
Prohibitive so far.
____________________________ is equal to 3.00 x 10^8 meters per second.
Speed of light.
____________________________ is a theory that describes what happens to matter, energy, time, and space speeds close to the speed of light.
The perspective of an observer from which the position and motion of a system can be described is called a(n) ____________________________
Sound is a ______________________ wave.
Electromagnetic waves are all _________________________.
Sound waves are _________________________ and _________________________.
A sound wave wavelength is a function of it _________________________ and _________________________.
Frequency and speed ( v = f (lambda) )
EM waves can travel in a _________________________
Waves on a string and water are examples of _________________________, and oscillate perpendicular to the direction the wave moves.
The low point of a wave is called its _________________________.
_________________________ carry energy and information from one place to another.
By touching your finger at a single point of the surface of a smooth pond, you can create a(n) _________________________ pattern
When waves bounce off an obstacle and change direction, it is known as_________________________.
Sound waves are _________________________, and oscillate in the same direction as the wave motion.
A wave bending around obstacles and going through opening is called _________________________
Using a heavy curtain in a theater to keep the audience from hearing backstage sound is an example of the _________________________ of sound waves.
In ________________ waves the vibrations are in the same direction as the direction of the wave.
Electromagnetic waves are ___________________ waves.
White light is observed when light of _________________ wavelengths strike the retina.
Visible light or the whole spectrum
_____________ are photoreceptors that respond to color.
_____________ is made up of all the possible colors of light.
A prism separates light into different wavelengths of _____________.
__________________________ are photoreceptors that respond to black, white, and shades of gray.
If a cloth that appears blue in white light is viewed in a room filled with only blue light, what color will it appear?
Creating color by changing the strengths of the signals of three primary colors is a(n) __________________________ used by TVs.
The three __________________________ are red, green, and blue.
Additive Primary colors
Another name for the subtractive color process is the __________________________.
CYMK color process.
Creating color by relying on the reflected and absorbed light of three primary colors is a(n) __________________________ used to dye fabric.
Another name for the additive color process is the __________________________.
RGB color process
The three __________________________ are cyan, yellow, and magenta.
Subtractive primary colors
The speed of light in a vacuum is __________________________
White light is a mixture of colors that can be split into the visible spectrum by a __________________________
In ________________ waves the vibrations are at right angles to the direction of the wave.
The longer the wavelength the ________________ the frequency.
Light waves, water waves, microwaves and the 'Mexican wave' are all examples of ________________ waves.
Waves with a high frequency have a ________________ wavelength.
The cover on a book appears blue in white light because it ________________ blue light an ________________ the other colors of light
________________ Colors of LIGHT are combinations of two light colors that can be mixed together to produce white light.
The speed of light is ________________ meters per second
3 x 10^8
The color of visible light with the lowest energy is ________________
Human color vision is due to the ________________ color process.
The color mixing process using the CMYK color process is called the ________________ color process.
The name of the PRIMARY LIGHTS are ADDED to make __________________________.
If the distance between a small light source is TRIPLED, the intensity (BRIGHTNESS) of light on the screen __________________________ by __________________________.
A __________________________ is made of 2 primary colors.
Any 2 lights across from each other are __________________________, and make __________________________.
2) White light
The name of __________________________ takes AWAY the color of light ACROSS the triangle from what we can see!
Any two paints ACROSS each other make __________________________ color, so we see NO LIGHT.
The metric unit used when measuring stress or pressure is the ________________.
The ________________ of a material is its mass divided by its volume.
________________ is a measure of the upward force a fluid exerts on an object that is immersed.
________________ ________________ states that the force exerted on an object by a liquid is equal to the weight of the fluid displaced by the object.
The mass per unit volume of a substance is its ______________________.
The greater the resistance in a circuit, the less the ______________________.
According to Ohm's law, the current in a circuit increases if the ______________________ increases. The current decreases if the ______________________ increases.
______________________ is what flows and carries power in a circuit.
Protons are _________________ charged, and electrons are _________________ charged.
Like charges _________________, and opposite charges _________________.
The unit in which charge is measured is the ______________________.
An object is ______________________ when it has equal numbers of positive and negative charges.
Ben Franklin defined current as going from __________________ to __________________. Now we know that electrons in a circuit move from __________________ to __________________
Positive to Negative; Negative to Positive
The charged parts of an atom are the __________________ and the __________________.
The __________________ are not charged.
An electrically neutral atom is an atom which ____________________________________.
Has a balance of protons and electron (the same number of each)
An electrically charged atom (sometime referred to as an ion) can be distinguished from an electrically neutral atom in that the charged atom (ion) ____________________________________.
Has an imbalance of protons and electrons (unequal numbers of these)
An object begins to gain or lose electrons from its atoms, it becomes __________________ or __________________ charged.
A negatively charged object has more __________________ than __________________.
A positively charged object has more __________________ than __________________.
Oppositely-charged objects __________________.
Like-charged objects __________________.
A charged object and a neutral object will __________________.
The __________________ reside in the nucleus of atoms and are tightly bound; they will never leave an atom as a result of electrostatic procedures.
On the other hand, __________________ are located outside the nucleus and are easily removed from or added to atoms.
When two materials are rubbed together, electrons are transferred from the material that has the greater affinity for electrons. The object that gains the electrons acquires a __________________ (+ or -) charge __________________ (+ or -).
Current in a conductor is equal to the __________________________________
Voltage applied to it divided by it's resistance.
__________________ are used when drawing circuit diagrams.
A __________________ is used to create a break in a circuit.
A __________________ has a break it, so there is no current.
A __________________ has a complete path for the current and contains no breaks.
The unit for current is the __________________
A __________________ provides voltage to a circuit.
__________________ is the difference in the amount of energy carried by current at two points in a circuit.
The __________________ is the unit for measuring voltage.
The __________________ is the unit for measuring resistance.
__________________ explains the relationship between current, voltage, and resistance in a circuit.
__________________ is the measure of how strongly a material resists current.
An object is ______________________________ if has a net positive charge on one side and a net negative charge on the other side.
A(n) ______________________________ can be used to tell whether an object has a net charge.
Charging by ______________________________ occurs when clothes brush against each other in the dryer.
The cause of resistance to the flow of charge within an electrical wire is ______________________________________.
Mobile charge carriers collide with atoms of the resistor.
As the battery voltage _______________ the current _______________
Increases (for both)
The standard metric unit used to express the amount of electrical resistance is the ______________________________.
The ratio of mass to volume is known ______________________________.
A measure of the upward force a fluid exerts on an immersed body is _______________.
The metric unit used for measuring pressure is the _______________.
Objects float in a fluid if the buoyancy force is greater than their own _______________.
The Buoyant force is the _______________ of the FLUID _______________ not the weight of the object
Dark Colors absorb _________________.
Light Colors reflects _________________.
The _________________ color of an object depends on the light shining on it
CYMK is a _________________ Subtractive Pigment
RGB is a _________________ Subtractive Pigment
RGB is a _________________ Additive
CYM is a _________________ Additive
Protons define the name of an _________________.
The greater the volume, the greater the _________________.
Density will _________________ be the same for the same substances
Unit of power is _________________
Speed of light only changes through _________________.
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