Science STAAR Review 2025

Front

What is Newton's Third Law of Motion?

Back

For every action, there is an equal and opposite reaction.

Front

How do octopuses and squids move through water?

Back

They suck in water and then eject it, propelling themselves forward.

Front

What does it mean when an object is moving at a constant speed?

Back

The object's speed does not change over time.

Front

How do you calculate acceleration?

Back

Acceleration = (Final Velocity - Initial Velocity) / Time.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is an example of a physical change?

Back

Melting ice or dissolving sugar in water.

Front

What are cool and very bright stars categorized as?

Back

They are often categorized as red giants or supergiants.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

Front

What is the unit of acceleration?

Back

Meters per second squared (m/s²).