Vocabulary Flashcards unit 9 lesson 2

Front

enterprise

Back

a plan or project that is often risky or difficult to carry out

Front

fleet

Back

a group of ships, planes, trucks, or other vehicles that are controlled by a single person, company, or government

Front

sphere

Back

an object shaped like a ball

Front

sponsors

Back

people who pay for the cost of an activity or event

Front

uncharted

Back

unexplored or unknown

Front

landmark

Back

an object on land that is easy to see and organize

Front

Magnetic field

Back

the area around each pole of a magnet that has the power to attract other metals

Front

Dead reckoning

Back

a way to measure speed when traveling through water by throwing a knotted rope with a piece of wood on the end overboard and observing how much of and how fast the rope is pulled into the water

Front

Compass

Back

a tool used for finding directions with a magnetic pointer that always points north

Front

hourglass

Back

a tool for measuring time; it is a glass container with an upper part and lower part connected in the middle by a narrow tube, and sand falls from the upper part into the lower part in a fixed amount of time, usually an hour