7.27.F - Exam: Quarter 3

Science exam

We should not only be a hearer of the word, but also a ___ of the word

doer

The cochlea is like a rolled up triangle which allows us to hear what part of sound

Pitch

Who was the first person to organize a Levitical choir

David

According the Bible, who was the father of music

Jubal

What phenomenon is illustrated when sound waves cause a glass to shatter

Resonance

Describe Worship

Worship is when you praise God in music. It allows you to show how much you love God. I think that with worship, you can feel closer to God.

When measuring the amplitude of a wavelength, at what point of the chart do you start measuring

Midpoint

What do we call the measurement of the loudness of sound

Amplitude

What do we call waves that causes a medium to vibrate at right angles to the direction in which the wave travels

Transverse

What do we call a wave in which the vibration of the medium is parallel to the direction the wave travels

Longitudinal

Resonance occurs when one vibrating object transfers energy to a second object causing it to vibrate. The energy transfer is most efficient when the second object has the same

Frequency

What were the first two musical instruments mentioned in the Bible

Lyre and pipe

What do we call the speed of an object in a particular direction

Velocity

Sound travels at about

340 meters per second

How many more times are you likely to be hit by lightning than attacked by a shark

30

Two things that lightning travels through

Plumbing and wires

If a rope is shaken and produces a wave length of 0.8 meters with the crest of the wave passing a certain point 3 times per second. What is the velocity of the wave?

2/4 m/s

If you use the metric system, what number do you divide the seconds you counted between seeing the lightning and hearing the thunder

3

Safest structure during a thunder storm

House

How many seconds between lightning and thunder mean the strike is one mile away

5 seconds

The loud explosive noise a plane makes when we hear the shock wave that comes from an it when it is traveling at or above the speed of sound is called

A sonic boom

The shock waves formed during a supersonic boom are formed by

Air that can't get out of the way fast enough

The sonic barrier is better known as the ___ barrier

Sound

If a sound wave is moving toward your ear with the velocity of 5.0 m/s and its frequency is 2.5 hertz, what is its wavelength

2.0 meters

Four things you should avoid during a thunder storm

1. Open structures

2. Electronics

3. Plumbing

4. Corded phone

What do we call waves when the crest of one wave fills the trough of another and they cancel each other out

Destructive interference

If you have two speakers in a room with the same sounds at the same frequency, what amplitude would you have

2 X the loudness

An antinode is

The half way point between nodes

The area between two crests on a sound wave is called the

Wavelength

What allows us to hear the loudness of a sound

The wave movement from crest to trough and back again

The beginning point or end point of a sound wave is called

A node

Plucking a guitar string and watching the string vibrate with the wave appearing not to move down the string is a good example of

A standing wave

Destructive interference results in waves that _ one another

Cancel out

When two crests from two wave sources meet, what is it called

Supercrest

What kind of interference do you get if you have two speakers playing music in a room where their crests meet

Constructive

Sound traveling through open doors and bending around corners is a good example of

diffraction

What famous scientist mistakenly stated that light was not a wave because he couldn't see constructive and destructive interference

Newton

What happens after two displacement waves pass through each other

After the waves pass through each other, destructive interference happens. The crest overlaps and fills in the trough so that no wave is produced until the waves pass through each other.

What does sound need to travel that light does not need

Medium

What area of the electromagnetic radiation spectrum tans your skin

Ultraviolet rays

What is the first thing God says is good when He created the world

Light

Which area of the electromagnetic radiation spectrum kills cancer cells

Gamma rays

What area of the electromagnetic radiation spectrum detects the energy our body releases so we can see people through walls with specialized cameras

Infrared

What do we call the radiation that allows us to see through the skin to visualize the bones

X-rays

Which part of the electromagnetic radiation spectrum does the rainbow appear in

Visible light

What can go faster than light

Nothing

The higher the frequency light is on the electromagnetic radiation spectrum the more ___ it has

Energy

Whose work suggested that we should view light as a train of particles.

Einstein

Why is Jesus "the light of the world."

Jesus is the light of the world because he created the world. Jesus controls everything in the world, including the sun. Without the sun, no one could see. Jesus keeps the sun shining because he loves us. This is how He is the light of the world.

Why is artificial light important to mankind

Without lights, doing things daily wouldn't be easy. At night, it would be impossible to see. You might hurt yourself several times trying to get to your bed. Or, if you worked in mines, you couldn't see a thing without a flashlight, thus not letting you do your job. Basically, artificial lights are very important, and everyone could live their everyday life with them.

Why were some chocolate squares softer than others when they were microwaves

Not all parts of the microwave are warm. There are cold spots that doesn't heat up as much as other parts. This is why there is a spinner in the microwave. It spins the food around, so each part of the food gets all the warm spots in the microwave. This makes sure that when you eat the food, it isn't cold at all.

What do we call the vividness of a color

Saturation

What do we call the brightness of a color

Saturation

Technically color consists of electromagnetic

Waves

Newton also discovered that it is not the rays of light themselves that are colored but the perception in our

Brain

In the formula v = f λ, what measurement is used for the frequency of the wavelength

Hertz

In the formula v = fλ what does the f stand for

Frequency

The only thing that distinguishes one light ray from another is its

Wavelength

The maximum distance that the particles a of light wave's medium vibrate from their rest position is called

Amplitude

A thin coil of wire stretched between two thicker wires in an incandescent light bulb is called a

Filament

One of the main disadvantages to the incandescent light is that

Only 10% of the energy makes light

What kind of gas is inside a neon sign

Inert

Which lighting source was the first invented both in the United States and England in approximately the same time period?

Incandescent

Light produced when an object gets hot enough to glow is called

Incandescent

All visible color comes from ___ light

White

The rapid movement of a particle, elastic solid, or surface across a central position is called a

Vibration

Which animal can hear the lowest frequencies

Whale

At 130 decibels of sound, humans experience

pain

What is the metric unit for measuring the frequency of sound waves

Hertz

The highness or lowness of a sound determined by the frequency of the waves is called

Pitch

What is the job of an acoustic engineer

To build structures which make sound clear and audible to someone anywhere in a room

One animal that uses echolocation to find its food

Bat

The Doppler Efect is used to figure out how ___ objects are moving in space

Fast

As a source of sound moves toward you, the pitch you hear is

Rising