Waves
Human Eye
Mixed
Unit 3
100
Which of the the following best describes the frequency of a wave?
A) It is the measure of how many times a wave cycles in a given period of time.
B) It is the measure of distance between the crest or the trough of a wave and its rest position.
C) It is the measure of a distance a single wave travels in a given period of time.
A) It is the measure of how many times a wave cycles in a given period of time.
100
True or False?
When it is really dark, your pupil will get bigger to let in more light
True!
100
If a telegraph operator received a message that was three short dots, three long dashes, and then three short dots again; and this pattern was repeated, what would this message read?
S.O.S
This is a universal distress signal used in emergencies to signal for help.
100
Which is a better conductor of thermal energy: a metal object or a plastic object?
A metal object!
200
The highest point of a wave is called the ______.
Crest
200
The ______ is the colored part of the eye which is a muscle.
Iris
200
For humans, which colors are visible on the spectrum?
Red, Orange, Yellow, Green, Blue, Indiago, Violet
200
Where do light bulbs get their energy from?
A) Light
B) Heat
C) An energy source
C) An energy source
300
5 Hertz
300
The _____ is the outer transparent layer of the eye which helps directs light into the eye.
Cornea
300
Which describes refraction?
A) The reflection of light as it passes through a substance.
B) The bending of light as it passes through a substance.
C) The focusing of light as it passes through a substance.
D) The emission of light as it passes through a substance.
B) The bending of light as it passes through a substance.
300
Heat energy flows from ____ objects to _____ objects because of their difference in temperature.
Heat energy flows from hot objects to cold objects because of their difference in temperature.
400
Do waves transport energy, matter, or both?
Waves only transport energy!
400
Explain how the human eye focuses light
A) The human eye is a lens. All light that enters it is focused by the eyelids.
B) The human eye has a lens. This lens is controlled by muscles around it which tell it how to focus the light.
C) The human eye has a lens. The lens is set to one focus length which focuses light. This is why somethings can appear blurry if they are far away.
B) The human eye has a lens. This lens is controlled by muscles around it which tell it how to focus the light.
400
What is the binary code?
A) Patterns of 1s and 0s
B) Patterns of 10s and 100s
C) Patterns of dots and dashes
A) Patterns of 1s and 0s
400
The particles in _____ are far apart and move very quickly and randomly
A) Ice
B) Room temperature water
C) Boiling water
C) Boiling water
500
TWO PART QUESTION: A log is floating in place in a pond. A large stone is dropped in the pond which creates waves. The waves move across the pond eventually reaching the log.
Pick 1 (250 points):The energy of the log will (increase or stay the same).
Pick 1 (250 points): The position of the log will move (up/down or left/right).
The energy of the log will increase. The position of the log will move up and down.
500
Which is the one part of the electromagnetic spectrum that the human eye can detect?
A) x-rays
B) visible light
C) radio waves
B) visible light
500
Which is the definition of telegraphy?
A) The transmission of signals using light waves from things such as lighthouses
B) The transmission of radio waves that get converted back into sound waves at the receiver
C) The science of using or making communication systems to transmit or reproduce information
C) The science of using or making communication systems to transmit or reproduce information
500
The human ear is coned shaped. How does this shape help people's hearing?
It amplifies sounds so that people can hear.