Science Review

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both the speed and direction of the object's motion.

Front

How does the direction of motion affect velocity?

Back

Velocity changes if the direction of motion changes, even if the speed remains constant.

Front

What is average speed and how is it calculated?

Back

Average speed is the total distance traveled divided by the total time taken. It is calculated using the formula: Average Speed = Total Distance / Total Time.

Front

What factors can affect the diffusion rate of a substance?

Back

Factors that can affect diffusion include temperature, concentration gradient, and the medium through which the substance is diffusing.

Front

How does temperature influence the diffusion of scent molecules?

Back

Higher temperatures increase the kinetic energy of molecules, leading to faster diffusion rates.

Tags

NGSS.MS-PS1-4

Front

What does a distance-time graph represent?

Back

A distance-time graph shows how the distance traveled by an object changes over time, indicating its speed and motion.

Front

What does it mean for an object to be in uniform motion?

Back

An object is in uniform motion if it travels equal distances in equal intervals of time, maintaining a constant speed and direction.

Front

What is the significance of a steep slope on a distance-time graph?

Back

A steep slope on a distance-time graph indicates a high speed, while a flat slope indicates that the object is at rest.

Tags

NGSS.MS-PS3-1

Front

What is the formula for calculating average speed in a two-part journey?

Back

Average Speed = (Distance1 + Distance2) / (Time1 + Time2).

Front

What is the role of direction in determining velocity?

Back

Direction is essential in determining velocity because it differentiates between two objects moving at the same speed but in different directions.