Spring Benchmark Review

Front

What is the atomic structure of lithium?

Back

Lithium has 3 protons, 3 electrons, and typically 4 neutrons. It has 2 energy levels: the first holds 2 electrons, and the second holds 1 electron.

Front

Which element has the same number of energy levels as lithium?

Back

Beryllium also has 2 energy levels.

Front

What are the phases of the moon?

Back

The phases of the moon include New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Last Quarter, and Waning Crescent.

Front

What is the distance of Alpha Centauri from Earth?

Back

Alpha Centauri is approximately 4 light-years away from Earth.

Front

What are the three objects in the Alpha Centauri system?

Back

The three objects in the Alpha Centauri system are stars.

Front

What is energy conversion?

Back

Energy conversion is the process of changing energy from one form to another, such as chemical energy to thermal energy.

Front

What is the role of chemical energy in a car engine?

Back

Chemical energy in the fuel-air mixture is converted to thermal energy during combustion, which then converts to mechanical energy to move the car.

Front

What is Newton's Third Law of Motion?

Back

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

Front

What is an action-reaction pair?

Back

An action-reaction pair consists of two forces that are equal in size, but opposite in direction, acting on two different objects.

Front

What is the definition of thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter; it is the total kinetic energy of particles in an object.