Physical Science Fall Semester Review

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another, caused by a change in its speed.

Front

How do you calculate density?

Back

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

Front

What materials are typically conductors?

Back

Conductors are typically made of metals, such as copper and aluminum.

Front

What two measurements are needed to determine density?

Back

Mass and Volume.

Front

What happens to molecules in a substance when the temperature increases?

Back

The molecules move faster and lose density.

Front

What is the definition of mass?

Back

Mass is the amount of matter in an object, usually measured in grams or kilograms.

Front

What is the definition of volume?

Back

Volume is the amount of space an object occupies, typically measured in cubic centimeters (cm³) or liters.

Front

What is the difference between reflection and refraction?

Back

Reflection is the bouncing back of light when it hits a surface, while refraction is the bending of light as it passes through different media.

Front

What is the formula for calculating the density of an object with a mass of 10 g and a volume of 5 cm³?

Back

Density = Mass / Volume = 10 g / 5 cm³ = 2 g/cm³.

Front

What is thermal expansion?

Back

Thermal expansion is the increase in volume of a substance as its temperature increases.