Physical Science Review

What two measurements are needed to calculate the density of a liquid?

• Mass and volume.

• Weight and temperature.

• Length and width.

• Pressure and temperature.

What is the unit of measurement for mass in the metric system?

• Gram (g)

• Kilogram (kg)

• Pound (lb)

• Ounce (oz)

Where is most of an atom's mass located?

• In the nucleus.

• In the electron cloud.

• In the outer shell.

• In the protons and neutrons.

What is the principle of conservation of energy?

• Energy can be created and destroyed.

• Energy cannot be created or destroyed, only transformed.

• Energy is always lost in every transformation.

• Energy can be converted into matter.

What is the relationship between mass and weight?

• Weight is the force of gravity acting on mass.

• Mass is the force of gravity acting on weight.

• Weight and mass are the same thing.

• Mass is independent of weight.

What is the formula for density?

• Density = Mass + Volume

• Density = Mass - Volume

• Density = Mass / Volume

• Density = Mass * Volume

What does a negative slope on a position vs. time graph indicate about an object's motion?

• The object is moving in the positive direction.

• The object is at rest.

• The object is moving in the negative direction.

• The object is accelerating.

What is the primary component of an atom's nucleus?

• Electrons

• Protons and neutrons.

• Photons

• Neutrinos

What is the law of universal gravitation?

• Every point mass attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

• The gravitational force between two masses is constant regardless of their distance.

• Only large celestial bodies exert gravitational force on each other.

• Gravitational force is only applicable in a vacuum and does not exist in other environments.

What is the mass and charge of an electron?

• Mass is 1/1836 that of a proton; charge is negative.

• Mass is equal to that of a proton; charge is positive.

• Mass is 1/1836 that of a neutron; charge is neutral.

• Mass is 1/2000 that of a proton; charge is positive.