Science

related to atoms, the smallest units of matter, including their structure, properties, and interactions

The atomic structure of an element includes its nucleus, composed of protons and neutrons, surrounded by electrons.

(biology) the part of a cell that contains most of the genetic information

The nucleus of a cell contains genetic material in the form of DNA, which regulates cellular activities.

a link that holds atoms or ions together in any molecule or crystal

The covalent bond between the hydrogen and oxygen atoms forms a water molecule.

the sum of money that needs to be payed for a thing or service

The hotel room charge included breakfast and Wi-Fi access.

(physics) the degree to which a substance is compacted, measured by dividing its mass by its volume

The density of water is approximately 1 gram per cubic centimeter (g/cm³).

(physics) the universal force of attraction between any pair of objects with mass

Gravity is what keeps the planets in orbit around the Sun and the Moon in orbit around the Earth.

(physics) any of the smallest units that energy or matter consists of, such as electrons, atoms, molecules, etc.

Electrons are fundamental particles with a negative electric charge.

a building or the piece of land surrounding it, owned by individuals, businesses, or entities

They inherited a large property with acres of farmland and a historic farmhouse.

a natural reaction or behavior that occurs automatically, without conscious thought or reasoning

The mother bird followed her instinct to build a nest and protect her eggs.

the chemical processes through which food is changed into energy for the body to use

Metabolism involves various biochemical reactions that convert nutrients from food into energy.

related to evolution or the slow and gradual development of something

The evolutionary process has led to the diverse array of life forms we see today.

(of food or farming techniques) produced or done without any artificial or chemical substances

Organic farming relies on natural methods and avoids the use of synthetic pesticides and fertilizers.

(biology) the slow and gradual development of living things throughout the history of the earth

Evolution is the process by which species change over time in response to environmental pressures.

the complete set of genetic material of any living thing

The human genome consists of approximately 3 billion base pairs of DNA, encoding all the information needed for human development and function.

(biology) a change in the structure of the genes of an individual that causes them to develop different physical features

The fish exhibited a unique fin shape, which was later identified as a result of a genetic mutation.

an unhatched or unborn offspring in the process of development, especially a human offspring roughly from the second to the eighth week after fertilization

During the first trimester, the human embryo undergoes rapid cell division and differentiation to form essential organs.

a vehicle that can use two or more different sources of power as needed, often petrol in addition to electricity or diesel

The latest hybrid SUV seamlessly switches between its petrol engine and electric motor during city commutes to maximize fuel economy.

to create an exact genetic copy of an organism or replicate something closely

Scientists successfully cloned the sheep "Dolly" from an adult cell.

(of a living being) to produce offspring or more of itself

Animals reproduce by giving birth to or laying eggs that hatch into offspring.

something that triggers a reaction in various areas like psychology or physiology

In a lab experiment, the researchers applied a visual stimulus to study participants to observe and measure their neurological responses.

the act of producing a substance that exists in living beings

The liver plays a crucial role in the synthesis of proteins necessary for blood clotting.

to make a vehicle, machine or object move more quickly

The pilot smoothly pushed the throttle forward to accelerate the airplane for takeoff.

to make a substance one with a liquid

The pharmacist instructed him to dissolve the medication in water before taking it.

a water-soluble chemical substance that contains Hydrogen and has a sour taste or corrosive feature with a PH less than 7

The lemon juice contains citric acid, which gives it a sour taste and a pH of around 2.

a light silver-gray metal used primarily for making cooking equipment and aircraft parts

The new set of aluminum cookware is both lightweight and highly resistant to corrosion, making it perfect for the kitchen.

a metallic chemical element that has a red-brown color, primarily used as a conductor in wiring

Copper is valued for its high electrical conductivity, which makes it ideal for wiring in electrical systems.

to guide or show the direction for others to follow

The tour guide led us through the museum.

someone who guides and directs an orchestra

The conductor raised their baton, signaling the orchestra to begin the symphony.

a solid substance formed when a chemical compound solidifies, with atoms arranged in a highly regular, repeating pattern

Salt forms a cubic crystal when it solidifies.

a type of powder that is explosive, used in making bullets, bombs, etc.

Gunpowder, also known as black powder, is a mixture of potassium nitrate, charcoal, and sulfur.

an explosive that is very powerful

Dynamite is an explosive material consisting of nitroglycerin absorbed in an inert substance, typically sawdust or clay.

the different elements that form something or the arrangement of these elements

The composition of water molecules consists of two hydrogen atoms and one oxygen atom, chemically bonded together.

to release gases or odors into the air

The factory chimney emits smoke into the air, affecting the local air quality.

a flat-bodied marine cartilaginous fish with eyes on the upper surface, swimming primarily using large, wing-like pectoral fins

The diver spotted a manta ray gliding over the reef.

a device that produces a powerful and concentrated beam of light that can be used in medical procedures, for cutting metal objects, etc.

The surgeon used a laser to precisely remove the tumor without damaging surrounding tissues.

an object that produces an invisible field capable of attracting certain metals without physical contact

At school we played with magnets and saw how they push and pull metal pieces on a sheet.

(of clothes) designed with special material that keeps the wearer warm

She wore a thermal jacket and pants to stay warm during the winter hike.

to reduce the volume or size of something by applying pressure, squeezing, or condensing it

The athlete wore compression socks to help compress the muscles and improve circulation.

a machine that produces electricity by converting mechanical energy into electrical energy

The hydroelectric generator harnesses the power of flowing water to produce electricity for nearby communities.

to become gas or vapor from liquid

Water can evaporate when exposed to heat.

to clean a surface by using a machine that sucks up dirt, dust, etc.

She vacuums the carpets in the living room every week to keep them clean.

without end or limits in extent, amount, or space

The universe is believed to be infinite in size, with no discernible boundaries.

a small remaining amount or part of a thing after it has been taken, used, etc.

The chemist found a residue of chemicals left in the test tube after the experiment was completed.