Physical Science Final Review

Front

What is the atomic number of Sodium?

Back

The atomic number of Sodium (Na) is 11, which indicates it has 11 protons in its nucleus.

Front

How do you calculate density?

Back

Density is calculated using the formula: Density = Mass/Volume.

Front

What is the density of a wooden ball that has a volume of 20 ml and a mass of 15 grams?

Back

The density of the wooden ball is 0.75 g/ml.

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation.

Front

Which of the following is a balanced chemical equation? AgNO3 + NaCl → AgCl + NaNO3

Back

This equation is balanced because it has equal numbers of each type of atom on both sides.

Front

What is the Doppler Effect?

Back

The Doppler Effect is the change in frequency or wavelength of a wave in relation to an observer moving relative to the wave source.

Front

What happens to sound waves as a source approaches you?

Back

As the source approaches, the sound waves are compressed, resulting in a higher pitch.

Front

What occurs when an object causes a wave to change direction and bend around it?

Back

This phenomenon is called diffraction.

Front

What is refraction?

Back

Refraction is the bending of waves as they pass from one medium to another due to a change in speed.

Front

What is reflection?

Back

Reflection is the bouncing back of a wave when it hits a barrier.