Science Q3

Question 1

Computation of Swave

Answer 1

Swave = λ f

Question 2

Computation of f

Answer 2

f = Swave/λ

Question 3

Computation of λ

Answer 3

λ = Swave/f

Question 4

Light coming from the sun, lighting, and organisms that emit their own light.

Answer 4

Natural light source

Question 5

Light from light bulbs and Flames from a candle.

Answer 5

Artificial light source

Question 6

A phenomenon when two waves meet in the same medium

Answer 6

Interface

Question 7

the ability of light to bounce back

Answer 7

Reflection

Question 8

– the bending of the light when it encounters obstacles or passes through a small opening

Answer 8

Diffraction

Question 9

light passes through

Answer 9

Transparent

Question 10

materials that only allow part of the light to pass through them.

Answer 10

Transluscent

Question 11

material totally that blocks the light

Answer 11

Opaque

Question 12

Characteristics of light

Answer 12

Speed
intensity
wavelength
frequency

Question 13

average kinetic energy present in a system

Answer 13

Thermal Energy

Question 14

energy that is transferred from one body to another as the result of difference in temperature.

Answer 14

Heat

Question 15

Energy in motion

Answer 15

Kinetic energy

Question 16

measure of hotness or coldness of an object

Answer 16

Temperature

Question 17

An instrument that measures temperature

Answer 17

Thermometer

Question 18

The process by which heat occurs through a medium from one point to another.

Answer 18

Conduction

Question 19

That allow electricity and heat to flow through it

Answer 19

Conductor

Question 19

that reduces or prevents transmission of heat or sound or electricity

Answer 19

Insulator

Question 20

is the transfer of heat through the actual physical movement of fluid

Answer 20

Convection

Question 21

the transfer of thermal energy by electromagnetic waves.

Answer 21

Radiation

Question 22

The basic building block of matter

Answer 22

Atom

Question 23

like charges repel each other and unlike changes attract with each other.

Answer 23

Laws of Charges

Question 24

if an object is being charged, then the electron is neither created nor destroyed.

Answer 24

Law of Conservation

Question 25

involves the transfer of electrons by rubbing objects against each other.

Answer 25

Friction

Question 26

involves friction at first to charge an object.

Answer 26

Conduction

Question 27

and instrument used to detect the present and kind of charge in an object.

Answer 27

Electroscope

Question 28

charging an object without any direct contact

Answer 28

Induction

Question 29

corresponds to 0°, the point of reference where all other horizontal lines are measured from.

Answer 29

Equator

Question 30

these lines that divide earth horizontally.

Answer 30

Latitudes

Question 31

vertical lines which divide earth into wedges.

Answer 31

Longitudes

Question 32

Why is Prime meridian is also called Greenwich Meridian

Answer 32

because it passes through Greenwich, England.

Question 33

A location that uses a chosen reference that will serve as the basis for its location

Answer 33

Relative Location

Question 34

A location that does not change no matter what happens to the surroundings

Answer 34

Absolute location

Question 35

Is the location based on the bodies of water surrounding it.

Answer 35

Insular Location

Question 36

are materials that can be replaced or replenished over a reasonable period, especially when managed properly.

Answer 36

Renewable resources

Question 37

are those that cannot be replaced or replenished over a reasonable amount of time.

Answer 37

Nonrenewable Sources

Question 38

are products that come from deep inside earth.

Answer 38

Fossil fuels and petroleum

Question 39

Is the process of evaporating a liquid and then cooling the steam at a certain temperature to condense it into its pure substance.

Answer 39

Distillation

Question 40

is a mix of water, aggregate (sand and gravel), and cement.

Answer 40

Concrete

Question 41

is made up of certain proportions of materials such as calcium, silicon, aluminum, and iron.

Answer 41

cement

Question 42

– is a black, sticky petroleum product made of a polycyclic hydrocarbon that has to be heated to hold the aggregates together.

Answer 42

Bitumen

Question 43

are also by-products of petroleum.

Answer 43

Petrochemicals

Question 44

– is the measure of the amount of water needed to make a certain product.

Answer 44

Water footprint

Question 45

Is the densest part of the atmosphere.

Answer 45

Troposphere

Question 46

It contains the OZONE LAYER, which is the layer of the atmosphere that deflects the UV radiation from the sun.

Answer 46

Stratosphere

Question 47

Is a really cool region where it is nearly -90 degrees Celsius at the very top of the layer.

Answer 47

Mesosphere

Question 48

In this layer, There is no ozone layer to protect you.

Answer 48

Thermosphere

Question 49

is a form of heat transfer by EM waves.

Answer 49

Radiation

Question 50

is a natural process that traps heat in Earth’s atmosphere, similar to how a greenhouse traps heat for plants to thrive.

Answer 50

Greenhouse effect

Question 51

is the steady, long-term increase in earth’s temperature due to trapped heat in the atmosphere.

Answer 51

Global warming and climate change

Question 52

Rising ocean temperatures stress corals, where corals lose their color and starve.

Answer 52

Coral Bleaching

Question 53

One of the major sources of greenhouse gases.

Answer 53

Burning of fossil fuels

Question 54

Changing the landscape so that it can be used by people, especially farming, increases the greenhouse gases in the atmosphere, particularly carbon dioxide.

Answer 54

Land use

Question 55

comes from heating up calcium carbonate, producing lime and carbon dioxide.

Answer 55

Making cement

Question 56

are particles suspended in the air, including CFCS and sulfates from burnt fossil fuels.

Answer 56

Aerosol