Exam: IELTS

Definition: A device that measures how high something is above sea level, often used in airplanes to detect changes in altitude by sensing pressure changes.

Example: The pilot checked the altimeter to ensure they were flying at the correct altitude.

Definition: The study and practice of measuring how high something is above a certain level, usually above sea level.

Example: Altimetry is crucial for understanding the Earth's topography.

Definition: The height of something above a specific reference point, usually above sea level. It can also refer to the position of a celestial object in the sky or the distance in geometry from a base to the top of a shape.

Example: The airplane reached an altitude of 30,000 feet during the flight.

Definition: This word describes something that is related to height above sea level or the distance from the ground.

Example: The altitudinal changes in the region affect the climate significantly.

Definition: This word means completely or entirely. It can also refer to the total number of something when counting all parts together.

Example: We need to rethink our strategy altogether if we want to succeed.

Definition: A state of being completely naked or without any clothing.

Example: He was caught swimming in the altogether at the beach.

Definition: A way of caring for others without thinking about oneself, showing kindness and concern for their well-being.

Example: Her altruism was evident when she volunteered at the homeless shelter every weekend.

Definition: A person who cares about the well-being of others and acts to help them, often putting their needs before their own.

Example: As an altruist, she dedicated her life to helping those in need.

Definition: Showing a selfless concern for the well-being of others; caring about other people's needs and happiness.

Example: Her altruistic nature led her to volunteer at the shelter every weekend.

Definition: In a way that shows a selfless concern for the well-being of others, without expecting anything in return.

Example: She altruistically donated her time to help the less fortunate.

Definition: A type of chemical compound made of aluminum and oxygen, often found in nature as a mineral. It is used in making aluminum and in various products like ceramics and abrasives.

Example: Alumina is a key ingredient in the production of aluminum metal.