Science STAAR 2025

Front

What is speed?

Back

Speed is the distance traveled per unit of time, often measured in meters per second (m/s).

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition, such as melting or chewing.

Front

What is Newton's 3rd law of motion?

Back

Newton's 3rd law states that for every action, there is an equal and opposite reaction.

Front

What are elements?

Back

Elements are pure substances that cannot be broken down into simpler substances by chemical means. They are the building blocks of matter.

Front

How many elements are there in the periodic table?

Back

As of now, there are 118 confirmed elements in the periodic table.

Front

What is the relationship between ocean temperature and hurricanes?

Back

Higher ocean temperatures can lead to more hurricanes, as warm water provides energy for storm formation.

Front

What is an example of a chemical change?

Back

An example of a chemical change is rust forming on iron.

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 speed and direction.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is the significance of the scientific method?

Back

The scientific method is a systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.