Open Court U2L2 Vocabulary

Ocean water is always on the move. Waves can lap quietly against a sandy beach or pound against a rocky shore.

What is the meaning of the word 'lap'?

• refers to a type of clothing worn for holidays and special occasions.

• slang term for a nap or to sleep for a small time.

• measurement of distance from one place to another.

• to gently hit something, producing low sounds.

What is the meaning of the word 'integral'?

• Area under a curve

• Ratio of two quantities

• Sum of a series

• Derivative of a function

Earth rotates on its axis once every twenty-four hours.

What is the meaning of the word 'axis'?

• An imaginary line around which an object rotates.

• A part of a plant responsible for photosynthesis.

• A measurement of the distance between two points on a map.

• A type of ancient food used by Native Americans.

The currents on the outside of the gyre move more quickly than the currents on the inside.

What is the meaning of the word 'gyre'?

• Straight line motion

• Stationary position

• Circular or spiral motion or form

• Random motion

What is the meaning of the word 'clockwise'?

• Counterclockwise

• Up and down

• Direction of the hands of a clock

• Left and right

In areas where the warm water pushes down the cold water, the gyre

kicks up minerals from the sea floor that are important to plankton.

What is the meaning of the word 'kicks'?

• A method of cooking food at high temperatures.

• To cause something to move suddenly or forcefully.

• A type of musical rhythm or beat.

• A series of promotional discounts offered by a shoe store.

What part of speech in the word 'up'?

• verb

• noun

• adjective

• preposition

Continents and islands form a type of border that fences in a gyre.

What is the meaning of the word 'fences'?

• Wooden structures used to support climbing plants.

• Metal barriers used to control access to a restricted area.

• Temporary structures used for construction purposes.

• Barriers or structures used to enclose or divide an area.

Some gyres are teeming with animal life.

What is the meaning of the word 'teeming'?

• To be empty or devoid of something

• To be partially filled with something

• To be stagnant or motionless

• To be full or overflowing with something

Like whirlpools, the water in eddies moves with great velocity.

What is the meaning of the word 'velocity'?

• The speed of something in a specific direction.

• The temperature at which a substance changes state.

• A type of energy produced by motion.

• The amount of space occupied by an object.