# Test Your Knowledge On Easy Science

Approved & Edited by ProProfs Editorial Team
The editorial team at ProProfs Quizzes consists of a select group of subject experts, trivia writers, and quiz masters who have authored over 10,000 quizzes taken by more than 100 million users. This team includes our in-house seasoned quiz moderators and subject matter experts. Our editorial experts, spread across the world, are rigorously trained using our comprehensive guidelines to ensure that you receive the highest quality quizzes.
| By Thames
T
Thames
Community Contributor
Quizzes Created: 2572 | Total Attempts: 9,224,597
Questions: 15 | Attempts: 284

Settings

Do you really know everything about Science?

• 1.

### The science term "ohm" is best defined as which of these?

• A.

Electrons Emitted From A Cathode

• B.

Measure Of Electrical Resistance

• C.

Closed Vessel To Make Steam

• D.

Plated Lizard

B. Measure Of Electrical Resistance
Explanation
The term "ohm" is a unit of measurement used to quantify electrical resistance. It represents the amount of resistance that a material or device offers to the flow of electric current. The higher the value in ohms, the greater the resistance. This measurement is essential in understanding and designing electrical circuits, as it helps determine the behavior of current flow and the efficiency of electrical devices.

Rate this question:

• 2.

### Which of these is the best definition of "photocell"?

• A.

Nautical Unit Of Speed

• B.

Visual Representation Of An Atom

• C.

• D.

Device Making Current From Light

D. Device Making Current From Light
Explanation
A photocell is a device that converts light energy into electrical energy. It is commonly used in various applications such as light sensors, solar panels, and automatic doors. When light falls on the photocell, it creates a flow of electrons, generating an electric current. This current can then be utilized for different purposes. Therefore, the best definition of a photocell is a device that makes current from light.

Rate this question:

• 3.

### The science term "rad" is best defined as which of these?

• A.

Moving The Body

• B.

A Unit Of Measure Of Absorbed Radiation

• C.

Distance Traveled By Light Through Space In One Year

• D.

Unit Of Power

B. A Unit Of Measure Of Absorbed Radiation
Explanation
The term "rad" is a unit of measure used to quantify the amount of absorbed radiation. It is commonly used in the field of radiology and radiation therapy to assess the amount of radiation exposure or dosage received by a person or object. The unit helps in understanding the potential health effects and determining appropriate safety measures in situations involving radiation.

Rate this question:

• 4.

### The science term "renewable energy" is best defined as which of these?

• A.

The Highest Electrical Demand Within A Particular Period Of Time

• B.

Environmental Protection Agency

• C.

Resources Including Solar, Wind, Geothermal, Hydro And Wood

• D.

Measure Of Frequency

C. Resources Including Solar, Wind, Geothermal, Hydro And Wood
Explanation
Renewable energy refers to resources that can be replenished naturally and are not depleted with use. This includes sources such as solar, wind, geothermal, hydro, and wood. These resources are considered renewable because they are continuously available and can be used to generate energy without causing harm to the environment.

Rate this question:

• 5.

### The science term "pH" is best defined as which of these?

• A.

Covering Of Ice Crystals

• B.

Change Of State Of Water From The Liquid To Vapor

• C.

A Study Of The Transformation Of Energy Into Other Manifested Forms

• D.

A Measure Of The Relative Acidity Or Alkalinity

D. A Measure Of The Relative Acidity Or Alkalinity
Explanation
pH is a measure of the relative acidity or alkalinity of a substance. It indicates the concentration of hydrogen ions in a solution. A pH value below 7 indicates acidity, while a pH value above 7 indicates alkalinity. It is an important concept in chemistry and biology as it helps determine the acidity or alkalinity of substances such as water, soil, and bodily fluids. The pH scale ranges from 0 to 14, with 7 being neutral.

Rate this question:

• 6.

### The science term "hurricane" is best defined as which of these?

• A.

The Direction From Which The Wind Is Blowing

• B.

A Tropical Cyclone With Sustained Winds Of 74 Miles Per Hour

• C.

The Geographic Circle At 0 Degrees Latitude On The Earth's Surface

• D.

Eight Bits

B. A Tropical Cyclone With Sustained Winds Of 74 Miles Per Hour
Explanation
A hurricane is best defined as a tropical cyclone with sustained winds of 74 miles per hour. This is the correct answer because a hurricane is a specific type of tropical cyclone that is characterized by its wind speed. A tropical cyclone becomes a hurricane when its sustained winds reach or exceed 74 miles per hour. Therefore, this option accurately describes the definition of a hurricane.

Rate this question:

• 7.

### The science term "ozone" is best defined as which of these?

• A.

Round, Shallow Dish That Is A Common Piece Of Laboratory Equipment

• B.

Moving In A Circle Around An Axis

• C.

Layer Of Gases Surrounding A Star Or Planet

• D.

A Nearly Colorless Gas And A Form Of Oxygen

D. A Nearly Colorless Gas And A Form Of Oxygen
Explanation
Ozone is best defined as a nearly colorless gas and a form of oxygen. Ozone is a molecule made up of three oxygen atoms (O3) and is pale blue in color. It is formed when oxygen molecules (O2) are broken apart by ultraviolet radiation from the sun. Ozone is found in the Earth's atmosphere, particularly in the ozone layer, where it plays a crucial role in absorbing harmful ultraviolet radiation. It also has various industrial and medical applications due to its strong oxidizing properties.

Rate this question:

• 8.

### The science term "ozone layer" is best defined as which of these?

• A.

Optical Element That Reflects

• B.

Atmospheric Layer Acts As A Filter Against Incoming Ultraviolet Radiation

• C.

4 Inches Or 10.16 Cm. Used For Measuring The Height Of Horses

• D.

British Thermal Unit

B. Atmospheric Layer Acts As A Filter Against Incoming Ultraviolet Radiation
Explanation
The correct answer is "Atmospheric Layer Acts As A Filter Against Incoming Ultraviolet Radiation." The ozone layer is a region in the Earth's stratosphere that contains a high concentration of ozone molecules. It acts as a protective shield against harmful ultraviolet (UV) radiation from the sun. UV radiation can cause various health issues, including skin cancer and cataracts. The ozone layer absorbs and filters out a significant amount of UV radiation, preventing it from reaching the Earth's surface. This definition accurately describes the role and function of the ozone layer.

Rate this question:

• 9.

### The science term "prevailing wind" is best defined as which of these?

• A.

An Instrument Used To Measure Atmospheric Pressure

• B.

A Wind That Blows From One Direction More Frequently Than Any Other

• C.

Substance Which Speeds Up A Chemical Or Biochemical Reaction

• D.

Animal Life

B. A Wind That Blows From One Direction More Frequently Than Any Other
Explanation
The term "prevailing wind" refers to a wind that blows from one direction more frequently than any other. This means that in a particular region, there is a dominant wind direction that occurs more often than any other wind direction. It is an important concept in meteorology and is used to understand and predict weather patterns in a specific area.

Rate this question:

• 10.

### The science term "radar" is best defined as which of these?

• A.

Between Celestial Objects

• B.

Fuel Formed In The Earth In Prehistoric Times From Remains Of Living-Cell Organisms

• C.

Acronym For Radio Detection And Ranging

• D.

To Separate Two Or More Components In A Liquid Mixture

C. Acronym For Radio Detection And Ranging
Explanation
The term "radar" is best defined as an acronym for Radio Detection And Ranging. Radar is a technology that uses radio waves to detect and locate objects, measure their distance and speed, and generate images of the objects. It is commonly used in various applications such as weather forecasting, air traffic control, and military surveillance.

Rate this question:

• 11.

### The science term "rainbow" is best defined as which of these?

• A.

Smallest Of The Body's Blood Vessels

• B.

Luminous Arc Featuring All Colors Of The Visible Light Spectrum

• C.

The Smallest Unit Of Information That A Computer Can Work With

• D.

Gas Produced In The Bowel

B. Luminous Arc Featuring All Colors Of The Visible Light Spectrum
Explanation
The term "rainbow" is best defined as a luminous arc featuring all colors of the visible light spectrum. A rainbow is a natural phenomenon that occurs when sunlight is refracted, or bent, by water droplets in the air, creating a spectrum of colors. It is a beautiful and colorful arc that can be seen in the sky, usually after rain showers. The colors of the rainbow, in order, are red, orange, yellow, green, blue, indigo, and violet.

Rate this question:

• 12.

### The science term "rain forest" is best defined as which of these?

• A.

Study Of The Structure Of The Body

• B.

Smallest Of The Body's Blood Vessels

• C.

Outermost Covering Of Trees And Some Plants

• D.

A Forest Which Grows In A Region Of Heavy Annual Precipitation

D. A Forest Which Grows In A Region Of Heavy Annual Precipitation
Explanation
The term "rain forest" refers to a forest that grows in an area with heavy annual precipitation. This type of forest is characterized by high levels of rainfall, which supports a diverse range of plant and animal species. The term does not refer to the study of the body's structure, the smallest blood vessels, or the outermost covering of trees and plants.

Rate this question:

• 13.

### The science term "rip current" is best defined as which of these?

• A.

Strong Surface Water Movement Of A Short Duration That Flows Seaward From The Shore

• B.

To Process And Reuse Materials

• C.

A Quantitative Limit On The Emission Of A Potentially Toxic Substance From A Source

• D.

Formed After A Supernova Explodes And Shrinks

A. Strong Surface Water Movement Of A Short Duration That Flows Seaward From The Shore
Explanation
A rip current is a strong surface water movement that flows from the shore out to sea. It is a narrow, fast-moving channel of water that can pull swimmers away from the shore. Rip currents are typically short-lived and can be dangerous for swimmers who are caught in them.

Rate this question:

• 14.

### The science term "sand" is best defined as which of these?

• A.

Loose Particles Of Hard, Broken Rock Or Minerals

• B.

Large Group Aquatic Plants

• C.

Planets Which Have Solid Rocky Surfaces

• D.

Device That Breaks Light Into Its Composite Wavelength Spectrum

A. Loose Particles Of Hard, Broken Rock Or Minerals
Explanation
Sand is best defined as loose particles of hard, broken rock or minerals. Sand is a granular material composed of small rock fragments or mineral grains. It is typically found on beaches, deserts, and riverbeds, and it is commonly used in construction and landscaping. The other options, such as large group aquatic plants, planets which have solid rocky surfaces, and a device that breaks light into its composite wavelength spectrum, do not accurately define the term "sand".

Rate this question:

• 15.

### The science term "stratosphere" is best defined as which of these?

• A.

Substance That Can Be Used To Produce Heat

• B.

Layer Of The Atmosphere Between The Troposphere And The Mesosphere

• C.

Body Covering Of Birds

• D.

The Spinal Column Found In Vertebrate Animals

B. Layer Of The Atmosphere Between The Troposphere And The Mesosphere
Explanation
The correct answer is "Layer Of The Atmosphere Between The Troposphere And The Mesosphere." The stratosphere is a layer of the Earth's atmosphere that is located above the troposphere and below the mesosphere. It is characterized by a stable temperature profile, with temperatures increasing with altitude due to the presence of the ozone layer. The stratosphere plays a crucial role in protecting life on Earth by absorbing most of the Sun's harmful ultraviolet radiation.

Rate this question:

Quiz Review Timeline +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

• Current Version
• Mar 21, 2023
Quiz Edited by
ProProfs Editorial Team
• Mar 18, 2015
Quiz Created by
Thames

Related Topics