Electricity/EM Spectrum/Light Final Study Guide
Remember to study the vocabulary words too!
What is electric force?
What is an electric field?
What is the difference between static and current electricity?
Draw a diagram of a series circuit that has three resistors and a battery (use the
symbols from class).
Draw a diagram of a parallel circuit that has three resistors and a battery (use the
symbols from class).
Draw a diagram of an open circuit with a switch (use the symbols from class).
How is current related to resistance?
List the three basic features of an electric circuit.
1.
2.
3.
Write the formula for Ohm’s law showing how to solve for each variable.
V=
R=
I=
List and then describe how the four factors that affect resistance.
1.
2.
3
4.
A toaster is plugged into a 120 V socket. If it has a current of 0.25 A in its coils,
what is the resistance of the toaster? Show your work.
A circuit has a resistance of 15.2 Ω and a current of 0.10 A. What is the voltage of
the circuit? Show your work.
What units are used to measure voltage, resistance, and current?
1.
2.
3.
What is the rule for the interaction of magnetic poles and electric charges?
List three insulators and three conductors of electricity.
Insulators-
Conductors-
If a copper wire in a working electric circuit is replaced by a piece of rubber
tubing, will there be a current in the circuit? Explain.
Identify and describe each method that can be used to transfer an electric
charge.
1.
2.
3.
What event neutralizes two charged objects?
What do circuit breaker and fuses do in a house?
What does the severity of a shock depend on?
Describe what happens to the current and resistance in a series circuit when more
devices are added and the voltage remains constant?
Describe what happens to the current and resistance in a parallel circuit when
more devices are added and the voltage remains constant?
Define chemical reaction.
A battery converts _________________ energy in ______________ energy.
What is voltage and how does it relate to current?
How is voltage created in a battery?
Using a graphic organizer, compare and contrast series and parallel circuits. You
should have at least three similarities and a total of six contrasts (3 each).
Electromagnetic Spectrum
1. What is the difference between a mechanical wave (like sound) and an
electromagnetic wave?
2. Name the radiation of the electromagnetic spectrum in order of decreasing
wavelengths.
3. A decrease in wavelength, results in a __________________ in frequency.
4. Which have higher frequencies, radio or infrared?
5. Which has more energy, radio or infrared?
6. Which wave travels at a faster speed, radio or infrared?
7. Identify the colors of the visible spectrum ranging from lowest frequency to
highest frequency.
8. Why does sunlight feel warm to your skin?
9. The amount of _____________________ carried by an electromagnetic
wave ________________________ with ______________________.
Word bank for the above question (frequency, energy, increases, decreases,
speed, amplitude)
10. Which type of radiation has more energy, infrared, visible light, or
ultraviolet? WHY?
Light and Color
1. What are three things that can happen when light strikes an object?
a.
b.
c.
2. In which three categories can most materials be classified, based on what
happens to light that strikes the material?
a.
b.
c.
3. What happens to light that strikes a translucent material? Transparent
material? Opaque material?
4. What are the primary colors of light?
5. When combined in equal amounts, what do all three of the primary colors of
light produce?
6. Why is a blueberry blue?
7. What determines the color of an opaque object?
8. Why would a red apple with green leaves appear black through a blue filter?
9. What color light reflects all wavelengths of light?
10. What color of light absorbs all wavelengths of light?
Reflection and Mirrors
1. What are two kinds of reflections?
2. Explain how both types of reflections obey the law of reflection.
3. What is the difference between a real image and a virtual image?
4. What is a focal point?
5. Why are images produced by a convex mirror always virtual and reduced?
6. What is a good use for a convex mirror? Why?
7. Draw a Venn diagram and use the word bank below to compare and contrast
concave and convex mirrors.
Word Bank: reduced image, virtual images, curves outward, curves inward,
enlarged images, real images, focal point behind mirror, focal point in front of
mirror
Refraction/Lenses and Seeing Light
1.
Explain what causes light rays to bend when they enter a new medium at an angle?
2. A____________________ lens is thicker in the center than at the edges. Light rays
parallel to the optical axis pass through and are _________________. This type of lens
produces a _____________________ image and a _____________________ image
depending on the location of the object relative to the ___________________ point.
3. A _________________________ lens is thinner in the center than at the edges. Light
rays parallel to the optical axis pass through the lens and are
_______________________. This causes light rays to never meet. This type of lens only
produces ______________________ images that are always upright and
_______________________ than the object.
4.
The ______________ of _____________________ is a measure of how much a ray of
light bends when it enters a material.
5. An object with a ___________________ index of refraction bends light the most.
6. The ____________ is a layer of cells that line the inside of the eyeball. This area is made
up of light sensitive cells called ______________ and _________________. Cells that
work in low levels of light are called the _____________. Cells that respond to color are
called ______________.
7. The type of lens found in the eye is a __________________ lens.