Exam: TOEFL

Definition: A unit of measurement for distance in astronomy, equal to one thousand parsecs.

Example: The nearest star is about 1.3 kiloparsecs away from Earth.

Definition: A unit of pressure equal to one thousand pascals, often used in measuring atmospheric pressure or in engineering contexts.

Example: The tire pressure should be around 220 kilopascals for optimal performance.

Definition: A unit of measurement that equals 1,000 metric tons, often used to describe the weight of large objects or the explosive power of bombs.

Example: The bomb had an explosive yield of 15 kilotons, which is equivalent to 15,000 metric tons of TNT.

Definition: A unit of electrical measurement that equals one thousand volts, often used to describe high voltage levels in electrical systems.

Example: The power lines carry electricity at a kilovolt level to ensure efficient transmission.

Definition: A unit of power that measures how much energy is used or produced, equal to 1,000 watts.

Example: The solar panel system generates 5 kilowatts of power each day.

Definition: A type of rock that is found in certain areas, especially in southern Africa, and is known for containing diamonds.

Example: Geologists often search for kimberlite pipes because they are a source of valuable diamonds.

Definition: A type of enzyme that helps move a phosphate group from one molecule to another, often using energy from ATP or ADP.

Example: Kinases play a crucial role in many cellular processes by adding phosphate groups to proteins.

Definition: Having a friendly, generous, or warm-hearted nature; being considerate and helpful to others.

Example: She is always kind to everyone she meets.

Definition: A category or type of something that shares common characteristics or traits.

Example: There are many kinds of fruits available at the market.

Definition: More friendly, generous, or considerate than someone or something else.

Example: She is always kinder to animals than to people.

Definition: A type of school for young children, typically aged four to six, that helps them prepare for elementary school.

Example: My daughter starts kindergarten next week and she is very excited.