Lesson 1 - Ocean Powered - Vocabulary

What is the definition of 'balanced forces'?

• Forces acting on an object that are equal in size but act in opposite directions, resulting in no change of movement.

• Forces that always cause an object to accelerate in the direction of the force.

• Forces that act only when objects are in motion.

• Forces that are unequal and cause a change in the object's speed or direction.

What is the definition of 'force'?

• A push or a pull that causes an object to change its motion (that is, start moving, stop moving, or change direction).

• A measure of the amount of matter in an object.

• The speed at which an object moves in a straight line.

• The energy stored in an object due to its position.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is the definition of 'dependent variable'?

• Something in an investigation that is being tested and depends on the independent variable.

• A variable that is always kept constant in an experiment.

• A factor that is manipulated to observe its effect on another variable.

• A measurement tool used to collect data in an experiment.

Tags

NGSS.MS-PS1-2

What is the definition of 'independent variable'?

• Something that is changed in an investigation.

• Something that is measured in an investigation.

• Something that stays the same in an investigation.

• Something that is not related to the investigation.

Tags

NGSS.MS-PS2-2

What is the definition of 'unbalanced forces'?

• Forces (pushes and pulls) that are not equal to one another.

• Forces that always act in pairs and cancel each other out.

• Forces that do not cause any change in motion.

• Forces that are always equal and opposite.

Tags

NGSS.MS-PS2-2

What is the definition of 'motion'?

• The act or process of changing position or location.

• A type of energy produced by the sun.

• A force that keeps objects at rest.

• The process of breaking down food in the body.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is the definition of 'turbine'?

• A wheel or rotor that is made to rotate by moving water or air.

• A device used to measure temperature.

• A container for storing liquids.

• A tool for cutting metal.

What is the definition of 'mass'?

• The amount of matter in an object, measured in kilograms.

• The force exerted by gravity on an object.

• The space an object occupies, measured in liters.

• The energy stored in an object due to its position.