Exam: Cambridge English: C1 Advanced (CAE)

Definition: The study of living organisms in water environments, including their interactions and ecosystems.

Example: She is pursuing a degree in hydrobiology to understand aquatic life better.

Definition: A type of organic compound made up only of carbon and hydrogen atoms, commonly found in fuels like oil and gas.

Example: Natural gas is primarily composed of hydrocarbons, which are used for heating and energy.

Definition: Relating to a medical condition where there is an abnormal accumulation of cerebrospinal fluid in the brain, often leading to increased head size and pressure.

Example: The doctor explained that the child was hydrocephalic and would need special treatment.

Definition: Describing a substance that has undergone a chemical process called hydrocracking, which breaks down large molecules into smaller ones using hydrogen and heat.

Example: The hydrocracked oil is more efficient for fuel production.

Definition: To break down heavy hydrocarbons into lighter products using hydrogen and heat, typically in the context of refining petroleum.

Example: The oil refinery hydrocracked the heavy crude oil to produce gasoline.

Definition: A facility in chemical engineering where a process called hydrocracking occurs, which breaks down large hydrocarbon molecules into smaller, more useful ones, typically in the production of fuels.

Example: The refinery's hydrocracker is essential for producing high-quality diesel fuel.

Definition: A method used in the oil industry to break down large hydrocarbon molecules into smaller ones, like gasoline or kerosene, by adding hydrogen and using high pressure and a catalyst.

Example: Hydrocracking is an important process in refining crude oil into usable fuels.

Definition: Relating to the movement of liquids and the forces involved when they are in motion.

Example: The hydrodynamic design of the boat allows it to move quickly through the water.

Definition: Relating to the study of fluids in motion and the forces acting on them.

Example: The hydrodynamical properties of the water flow were analyzed in the experiment.

Definition: The area of science that studies how liquids move and behave when they are in motion.

Example: Engineers use hydrodynamics to design efficient ships and submarines.

Definition: A type of enzyme found in some microorganisms that helps in chemical reactions involving hydrogen, either by breaking down substances or by using hydrogen gas.

Example: The hydrogenase enzyme plays a crucial role in the energy metabolism of certain bacteria.