Science Vocabulary: Thermal Energy 1.2-3.1

A molecule is defined as:

• A group of atoms bonded together

• A single atom

• A type of chemical reaction

• A phase of matter

Answer explanation

A molecule is defined as a group of atoms bonded together, making the first answer choice correct. The other options describe different concepts in chemistry, not the definition of a molecule.

Tags

NGSS.MS-PS1-1

The definition of Average is:

• The sum of values divided by the number of values

• The difference between the highest and lowest values

• The middle value in a list of numbers

• The most frequently occurring value

Answer explanation

The average is calculated by taking the sum of all values and dividing it by the number of values. This definition matches the first answer choice, making it the correct one.

Kinetic Energy is defined as:

• The energy possessed by an object due to its motion

• The energy stored in an object due to its position

• The energy released during a chemical reaction

• The energy produced by nuclear reactions

Answer explanation

Kinetic Energy is specifically defined as the energy an object has due to its motion. This distinguishes it from potential energy, which is related to an object's position, and other forms of energy like chemical or nuclear.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

The definition of Infer is:

• To conclude information from evidence and reasoning

• To provide a detailed explanation

• To ask a question

• To describe a process

Answer explanation

The correct definition of 'infer' is to conclude information from evidence and reasoning. This means drawing conclusions based on available data, rather than providing explanations, asking questions, or describing processes.

Tags

NGSS.HS-ESS3-1

NGSS.HS-LS4-2

The definition of System is:

• A set of connected things or parts forming a complex whole

• A single isolated component

• A random collection of unrelated items

• A simple, non-interactive element

Answer explanation

The correct choice defines a system as a set of connected parts that work together, highlighting the complexity and interrelation of its components, unlike the other options which describe isolated or unrelated items.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS3-4

NGSS.MS-ETS1-1

NGSS.MS-LS2-3

Collision is defined as:

• A situation where two or more objects hit each other.

• A process of separating two objects.

• A method of calculating speed.

• A technique for measuring distance.

Answer explanation

Collision is defined as a situation where two or more objects hit each other, making the first answer choice the correct one. The other options describe different concepts unrelated to the definition of collision.

Tags

NGSS.MS-PS2-1

Transfer is defined as:

• The act of moving something from one place to another

• The process of creating something new

• The ability to understand complex concepts

• The method of calculating numbers

Answer explanation

Transfer refers to the act of moving something from one place to another, making the first answer choice the correct definition. The other options describe different processes unrelated to the concept of transfer.

Tags

NGSS.MS-PS3-5

The definition of Change is:

• A process of becoming different

• A state of remaining the same

• An act of repeating

• A method of calculation

Answer explanation

The correct choice, 'A process of becoming different', accurately defines change as it emphasizes transformation, while the other options describe stability, repetition, or calculation, which do not align with the concept of change.

Tags

NGSS.MS-LS2-4

NGSS.MS-PS1-2

Stability is defined as:

• The ability to maintain equilibrium

• The capacity to change rapidly

• The tendency to fall over

• The potential to grow indefinitely

Answer explanation

Stability refers to the ability to maintain equilibrium, meaning a system can resist changes and return to a balanced state. The other options describe different concepts that do not align with the definition of stability.

Equilibrium is defined as:

• A state of rest or balance due to the equal action of opposing forces.

• A condition where all chemical reactions have ceased.

• A situation where only one force is acting on a body.

• A phase where energy is continuously added to a system.

Answer explanation

Equilibrium refers to a state of rest or balance where opposing forces are equal, making the correct choice A accurate. The other options describe different conditions that do not represent equilibrium.