Physical Science In Class Final

Front

What is Ohm's Law?

Back

Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor. Formula: V = I * R.

Front

What is a metalloid?

Back

Metalloids are elements that have properties intermediate between metals and nonmetals. They are typically semiconductors and include elements like silicon and antimony.

Front

What is beta decay?

Back

Beta decay is a type of radioactive decay in which an unstable atomic nucleus transforms into a more stable one by emitting a beta particle (an electron or a positron), resulting in an increase in atomic number.

Front

What type of wave has the highest frequency?

Back

X-rays have the highest frequency among the given options, followed by ultraviolet light, visible light, and then radio waves.

Front

What happens to molecules during a phase change when energy is added?

Back

When energy is added to molecules during a phase change, the energy of the molecules overcomes intermolecular attractions, allowing the substance to change from solid to liquid or liquid to gas.

Front

Define resistance in an electrical circuit.

Back

Resistance is a measure of the opposition to the flow of electric current in a conductor. It is measured in ohms (Ω).

Front

What is the difference between fission and fusion?

Back

Fission is the splitting of a heavy nucleus into smaller nuclei, releasing energy. Fusion is the combining of light nuclei to form a heavier nucleus, also releasing energy.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, including radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays.

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is an ion?

Back

An ion is an atom or molecule that has gained or lost one or more electrons, resulting in a net electrical charge.