midterm exam staar released

Front

What is Newton's Third Law of Motion?

Back

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

Front

What is a Hertzsprung-Russell diagram?

Back

A graphical representation of stars plotted according to their luminosity and temperature.

Front

What type of stars belong to spectral class M and have the highest luminosity?

Back

Supergiants.

Front

What happens to the seasons when the area you live in tilts away from the sun?

Back

It is winter.

Front

What is the definition of velocity?

Back

Velocity is the speed of an object in a specific direction.

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 a balanced chemical equation?

Back

A chemical equation where the number of atoms for each element is the same on both sides.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is the significance of the area under a velocity-time graph?

Back

It represents the distance traveled by the object.

Front

What is the role of oxygen in combustion reactions?

Back

Oxygen acts as an oxidizing agent, allowing fuels to burn.