Vocabulary

• on earth: Used to emphasize a question expressing surprise or anger.
• for example: As an illustration or instance.
• based on: To use something as the foundation or starting point for something else.
• on the strength of: Based on or because of something.
• in principle: In theory; as a general idea, though not yet in practice or detail.
• in the first place: To begin with; as the first point or consideration.
• wait around: To wait idly or without a specific purpose.
• have to: Must do
• strength: Condition of being strong
• good: Proper, appropriate or right
• surface: To give (road) a top layer
• limit: Point beyond which it is not possible to go
• sink: To push something down into the ground
• earth: Wire connecting an electrical device to the ground
• rock: To be greatly upset by something, e.g. a death
• claw: Long, sharp, and usually curved nail of an animal
• crust: Hard outer layer of something, e.g. the earth
• soar: (Of prices, etc.) to increase a lot in a short time
• carve: To cut a piece of cooked meat into thin slices
• mountain: Very high piece of land, higher than a hill
• height: Distance of something from the bottom to the top
• mantle: History cloak without sleeves worn over clothes
• mount: To attach something to something else