LRA 211 REVIEW QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED
A+
1. Amplitude is the:
Answer: ✔✔ Width of a waveform
Solution:
Amplitude refers to the height or intensity of a waveform, typically
measured from the middle of the wave to its peak. In electromagnetic
radiation, like x-rays, amplitude represents the strength or intensity of the
wave. A higher amplitude indicates a more intense signal or greater energy
in the wave.
2. An atom is the:
Answer: ✔✔ Smallest particle of an element that cannot be divided or
broken by chemical means
Solution:
An atom is the basic building block of matter and the smallest particle of an
element that retains all the properties of that element. It consists of a central
nucleus (containing protons and neutrons) and electrons orbiting around it.
The atom cannot be broken down by chemical reactions; only nuclear
reactions can change the atom's composition.
3. Atomic mass number (A) is the:
Answer: ✔✔ Number of protons plus number of neutrons in the nucleus
Solution:
The atomic mass number (or mass number) is the total number of protons
and neutrons in the nucleus of an atom. It gives an estimate of the atom's
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED
A+
1. Amplitude is the:
Answer: ✔✔ Width of a waveform
Solution:
Amplitude refers to the height or intensity of a waveform, typically
measured from the middle of the wave to its peak. In electromagnetic
radiation, like x-rays, amplitude represents the strength or intensity of the
wave. A higher amplitude indicates a more intense signal or greater energy
in the wave.
2. An atom is the:
Answer: ✔✔ Smallest particle of an element that cannot be divided or
broken by chemical means
Solution:
An atom is the basic building block of matter and the smallest particle of an
element that retains all the properties of that element. It consists of a central
nucleus (containing protons and neutrons) and electrons orbiting around it.
The atom cannot be broken down by chemical reactions; only nuclear
reactions can change the atom's composition.
3. Atomic mass number (A) is the:
Answer: ✔✔ Number of protons plus number of neutrons in the nucleus
Solution:
The atomic mass number (or mass number) is the total number of protons
and neutrons in the nucleus of an atom. It gives an estimate of the atom's
