Physical Science Unit 3 Review

Front

What is alpha decay?

Back

Alpha decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle (2 protons and 2 neutrons), resulting in a new element with a lower atomic number.

Front

What is the product of the alpha decay of Gold-175?

Back

Ir-171

Front

How do you calculate specific heat?

Back

Specific heat (c) is calculated using the formula: c = Q / (m * ΔT), where Q is the heat added, m is the mass, and ΔT is the change in temperature.

Front

What is the specific heat of an object with a mass of 3.5 kg, initial temperature of 29°C, and final temperature of 39°C after adding 250 Joules of energy?

Back

7.14 J/kg⋅°C

Front

What is a beta particle?

Back

A beta particle is a high-energy, high-speed electron or positron emitted during radioactive decay, which has no mass and a negative charge.

Front

What can stop a beta particle?

Back

Beta particles can be stopped by materials such as aluminum foil.

Front

What is the difference between electrical energy and mechanical energy?

Back

Electrical energy is the energy of electric charges, while mechanical energy is the energy associated with the motion and position of an object.

Front

What do electric motors convert?

Back

Electric motors convert electrical energy into mechanical energy.

Front

What are the poles of a magnet?

Back

The poles of a magnet are the regions where the magnetic force is strongest, typically referred to as the north and south poles.

Front

What is gamma radiation?

Back

Gamma radiation is a form of electromagnetic radiation emitted from the nucleus of an atom, characterized by high energy and no mass.