Deck 12: Energy, Technologyengineering

Question 1

Which of the following is a correct statement that could be made about a simple circuit containing a lit bulb?

A) Any switch in the circuit must be open.
B) There is a flow of electrons through the circuit.
C) An insulator in the circuit has terminated electron flow.
D) Protons flowing through the bulb's filament caused the release of light and heat.

Answer 1

There is a flow of electrons through the circuit.

Question 2

Which of the following would be an incorrect statement about a small, lit light bulb in a simple series circuit?

A) It is an energy converter.
B) It usually contains a filament.
C) It is converting heat energy to electrical energy.
D) It offers resistance to the flow of electrical energy.

Answer 2

It is converting heat energy to electrical energy.

Question 3

Which of the following is a correct statement about the nature or behavior of sound?

A) Sound waves consist of compressions and rarefactions.
B) The frequency of a sound wave and its volume are the same.
C) Its speed is 186,000 miles/second (about 300,000 kilometers/second).
D) Its speed at the surface of the earth does not vary with the temperature of the air.

Answer 3

Sound waves consist of compressions and rarefactions.

Question 4

Which of the following is a characteristic of light rays?

A) Their direction can be changed by a mirror
B) They are straightened as they travel from one medium to another
C) Whey they shine through a convex lens they are spread apart by that lens
D) When they shine through a concave lens they are brought to the middle of that lens

Question 5

Which of the following statements is not a component of the law of conservation of energy?

A) Energy is not created.
B) Energy is dependent upon the height and mass of objects.
C) Energy can be transformed from one form to another.
D) Energy is not destroyed.

Question 6

Which of the following serves as an accurate definition of opaque materials?

A) Materials that light can pass through
B) Materials that light cannot pass through
C) Materials that permit some, but not all, light to pass through
D) Materials that permit exactly ½ of light waves to pass through

Question 7

Which of the following is a characteristic of a convex lens?

A) It is thicker at its edges than at its center
B) It pulls light rays together to a focal point
C) It causes light rays to bend toward its edges
D) It can produce only virtual images that are smaller than the real objects

Question 8

Which of the following depends on the number of complete vibrations that the vibrating object makes in
One second?

A) Pitch
B) Intensity
C) Loudness
D) Frequency

Question 9

Which of the following is an example of a good electrical conductor?

A) Wood
B) Rubber
C) Selenium
D) Aluminum

Question 10

In order to understand the concept of static electricity, one would also have to understand which of the
Following?

A) Atoms
B) Generators
C) Heat transfer
D) Electrical circuits

Question 11

Some of the topics discussed in this chapter include light, prisms, and color. In a paragraph, describe the relationship between these concepts.

Question 12

In a paragraph, explain how the concepts magnets, electricity, generators, and motors are related.

Question 13

There is a distinct difference between kinetic and potential energy. In a paragraph, describe both types of energy,
and be sure the description clarifies the difference between the two.

Question 14

Considering question 3, provide two real life examples of both types of energy.

Question 15

There are distinct differences between parallel and series circuits. In a paragraph, describe both types of circuits, and be sure the description clarifies the difference between the two.

Question 16

Considering question 5, provide two real life examples of both types of circuits.

Question 17

In a paragraph, describe the difference between transparent, opaque, and translucent with regard to refraction of light.

Question 18

Considering question 7, provide at least two everyday examples of each.

Question 19

In two paragraphs, describe the difference between a convex and concave lens.

Question 20

In at least three sentences, outline the steps involved in a sound being made.