Science- 3rd Qrt - Lights camera action!

Question 1

Do you think this statement is true: “Science defines energy as the ability to do work.”

Answer 1

Yes, it is true.

Question 2

Different forms of energy?

Answer 2

chemical energy
electrical energy
sound energy
radiant energy

Question 3

The primary source of energy on Earth is the _______.

Answer 3

Sun

Question 4

The heat and light from the sun is called _______.

Answer 4

solar energy.

Question 5

Heat is a form of energy associated with fast and continuous movements of tiny particles in matter called _______.

Answer 5

molecules

Question 6

Heat may be transferred in three ways:

Answer 6

conduction
convection
radiation

Question 7

____ is the transfer of heat between particles that are touching or in contact with each other.

Answer 7

conduction

Question 8

Conduction takes place in _______

Answer 8

solid materials

Question 9

Materials that allow heat energy to be transferred within them.

Answer 9

conductors

Question 10

Examples of of conductors.

Answer 10

metals

Question 11

Materials that do not allow transfer of energy are _________.

Answer 11

nonconductors

Question 12

Examples of nonconductors.

Answer 12

cloth
plastics

Question 13

It is a heat transfer by mass motion (up and down movement) of gases and liquids.

Answer 13

convection

Question 14

Convection happens in

Answer 14

gas or liquid.

Question 15

A method of heat transfer process by which energy is emitted as either particles or waves. This heat transfer does not have any medium.

Answer 15

radiation

Question 16

Light energy is formed by ________.

Answer 16

electromagnetic waves

Question 17

Waves that have both electric and magnetic fields.

Answer 17

electromagnetic waves

Question 18

Is an electromagnetic wave that enables you to see things. This is the only form of light that is visible to the human eyes.

Answer 18

visible light

Question 19

Other forms of light energy are invisible to your eyes such as ____

Answer 19

infrared, microwaves and x-rays

Question 20

The different electromagnetic waves can be found in the ________.

Answer 20

electromagnetic spectrum

Question 21

True or False: Radio waves have the longest wavelength, while the gamma rays have the shortest wavelength.

Answer 21

True

Question 22

Different properties of light?

Answer 22

Light can be transmitted
Light can be reflected
Light can be refracted
Light can be absorbed

Question 23

A property of light occurs when light passes through a surface is called ______.

Answer 23

transmission

Question 24

Materials that transmit light are _____.

Answer 24

transparent materials.

Question 25

Is a type of material that allows only some light to pass through.

Answer 25

translucent material

Question 26

Examples of translucent materials.

Answer 26

frosted window tinted plastic cups waxed paper sunglasses

Question 27

Is a type of material that do not allow light to pass through at all.

Answer 27

opaque material

Question 28

A _______ is formed when light rays hit an opaque object.

Answer 28

shadow

Question 29

Is the bouncing back of the light from the surface it hits.

Answer 29

reflection

Question 30

True or False: Objects that are usually smooth and have shiny surfaces are good reflectors of light.

Answer 30

True

Question 31

Is the bending of light as it passes from one transparent substance into another.

Answer 31

refraction

Question 32

This happens when the light gets converted to another form of energy. This occurs when light disappears as it passes through another medium.

Answer 32

absorption

Question 33

Is the absence of color?

Answer 33

Black

Question 34

Presence of all colors

Answer 34

White

Question 35

True or False: Dark colored materials absorb more light energy than the light colored ones.

Answer 35

True

Question 36

The best defense against excessive heat is ________.

Answer 36

prevention

Question 37

_____ energy is produced by the vibration of objects.

Answer 37

Sound

Question 38

The matter that transports the sound is called the _____.

Answer 38

medium

Question 39

Is it true that sound cannot travel through a vacuum or an empty space?

Answer 39

Yes, it is true.

Question 40

Characteristics of Sound.

Answer 40

Sound can be reflected. Sound can be refracted. Sound can be absorbed.

Question 41

Is a reflection of sound, arriving at the listener some time after the direct sound. Sound waves bounce off the vertical surface, and are reflected back toward the source.

Answer 41

echo

Question 42

True or False: Reflection of sounds can detect objects underwater like a submarine or a missing sunken ship.

Answer 42

true

Question 43

Is the bending of waves when they enter a medium where their speed is different.?

Answer 43

Refraction

Question 44

_____ takes place when a sound wave hits an object, part of the energy of the wave is transferred to the particles making up the object.

Answer 44

Absorption

Question 45

True or False: High frequency sound waves are absorbed more rapidly than low frequency sounds.

Answer 45

True

Question 46

Is the science that deals with the production, transmission, and effects of sound.

Answer 46

acoustics

Question 47

The basic properties of sounds are _______?

Answer 47

pitch loudness tone

Question 48

The number of vibrations a sound energy creates is called _________.

Answer 48

frequency

Question 49

Determines the pitch of a sound?

Answer 49

frequency of sound

Question 50

Describes how high or how low a sound produced is?

Answer 50

pitch

Question 51

True or False: Sound with less vibrations has a lower pitch, while that with more vibrations has a higher pitch.

Answer 51

true

Question 52

The height of the wave is referred to as the ___________.

Answer 52

amplitude

Question 53

Determines the loudness or softness of a sound?

Answer 53

amplitude of a sound

Question 54

True or False: Higher amplitude means a louder sound, and lower amplitude means a softer sound.

Answer 54

True.

Question 55

Sets the amplitude of a wave?

Answer 55

vibration of a source.

Question 56

True or False: The loudness of a sound is a also determined by the sensitivity of the ear.

Answer 56

True

Question 57

Is a measurement of loudness that ranges from the threshold of hearing, 0 dB (silence), to the threshold of pain about 140 db.

Answer 57

decibel (db)

Question 58

The normal average conversation sound is between?

Answer 58

60-65 dB.

Question 59

When does a sound becomes a noise?

Answer 59

When one's ear could not tolerate the loudness.

Question 60

Examples of common causes of noise nuisance _____.

Answer 60

dogs barking neighbors' loud music parties loud speech laughter

Question 61

Is the measure of the quality of sound wave?

Answer 61

Tone

Question 62

Uneven sound waves create?

Answer 62

noise

Question 63

True or False: Sounds with regular pattern is music to our ears. The more irregular the vibrations, the more jogged or uneven the sound wave is.

Answer 63

True

Question 64

What can you do to protect yourself and other people from too much noise?

Answer 64

Minimize the time you are exposed to loud sounds. Avoid visiting places with very loud sounds such as airports Wear ear protectors like ear muffs or ear plugs whenever exposed to loud sounds.

Question 65

List ways on how to protect oneself from excessive light and heat.

Answer 65

Avoid staying under the direct heat of the sun. Stay indoors or stay in a shady area during very hot days Use an umbrella, visor, or cap to protect you from the heat and light of the sun. Wear sunglasses to protect your eyes from the glaring sun. Stay in a well-ventilated place to avoid fainting due to heat. Make sure that your house is properly ventilated. A quick shower or bath can keep your body temperature normal during very hot days. Drink plenty of water. Do not wait until you are thirsty before your drink. Avoid drinks containing caffeine, alcohol, or large amount of sugar. These drinks cause dehydration. Wear lightweight, light-colored, and loose clothing.