Vocabulary

• on earth: Used to emphasize a question expressing surprise or anger.
• such as: For example; like
• in other words: Stating something in a different way, often to make it clearer or more understandable.
• for long: For a considerable period of time.
• evidence of: Facts, objects, or signs that make you believe that something is true.
• pick up on: To notice or become aware of something that is not obvious.
• answer to: To be responsible to someone and have to explain your actions to them.
• used to: Did regularly before, but don't do now
• over to: Used to hand over to someone else to speak
• for now: Temporarily; for the present time.
• episode: One separate event in a series of events
• evidence: Factual proof that helps to establish the truth
• period: Set amount of time during which events take place
• vocabulary: Words that have to do with a particular subject
• convince: To persuade someone, or make them feel sure
• general: Widespread, normal or usual
• amount: Quantity of something
• method: (Organized and planned) way of doing something
• concrete: Hard building material made of cement, sand, water
• exist: To be present, alive or real
• crust: Hard outer layer of something, e.g. the earth
• mysterious: Unusual; hard to understand or work out
• keen: Being eager or excited for something to happen
• mean: Average of a set of numbers
• hypothesis: A theory trying to explain something
• fraction: Small part of something
• similar: Nearly the same; alike
• tiny: Very, very small
• remain: To be left behind; to continue to exist
• consensus: A decision that is shared by most of a group
• explain: To make clear or easy to understand by describing
• preserve: To cook food so it can be kept for long periods
• idiom: Phrase with a special, metaphoric meaning
• advance: Forward movement by an army
• scientific: Concerning academic study of the physical world
• planet: One of the bodies that orbit the sun
• drop: Distance between a higher and a lower level
• institute: Organization studying science, engineering etc.
• civilization: A highly developed society
• colleague: Person you work or cooperate with
• quiz: A game in which players answer questions on topics
• prove: To demonstrate truth by providing evidence
• layer: One of several sheets of a material or object
• discuss: To talk about seriously or in great detail
• fossil: Plant or animal that became rock after many years
• trace: To make an outline to determine a shape
• personally: By a specific person, and not by anyone else
• lot: What happens to a person in life from chance; fate
• learn: To get knowledge or skills by study or experience
• director: Senior person who manages part of an organization
• argue: To fight or disagree over something
• program: To make someone act or think in a certain way
• blink: To close and open one or both of the eyes rapidly
• wrong: Action that is harmful, unjust or illegal
• jaw: One of the two bones of the face where teeth grow
• propose: To make an offer of marriage
• frank: Member of the ancient Germanic peoples
• vanish: To disappear in a sudden and mysterious way
• suggestion: Idea about what someone should do
• worksheet: Piece of paper showing work planned or done
• affirm: To state, strengthen or support a belief you have