Radon and its significance in Radiation Exposure

Cosmic rays mainly consist of electrons.

Low levels of uranium, thorium, and their decay products are only found in the soil.

Radon is a gas that comes from the radioactive decay of natural uranium and thorium.

People living in granite areas receive less terrestrial radiation than others.

Part of the radon gas stays underground and goes into the groundwater.

Cosmic ray exposure is higher at sea level compared to higher elevations.

Bone marrow is one of the most important organs in the human body.

Irradiation of pregnant patients is strictly controlled to prevent birth defects.

The average radiation dose to the population is higher in therapeutic uses compared to diagnostic uses.

The harmful effects of radiation are independent of factors like type of radiation and radiation dose.

The sensitivity of tissues and organs to radiation has no impact on the harmful effects.

Natural sources of radiation include 238U and 232Th found in the earth.

Background radiation is only present in man-made environments.

Alpha, beta, and gamma are the three types of radiations emitted by different radioactive materials.

Cosmic radiation exposure varies in different parts of the world due to differences in elevation.

The largest source of human-made radiation exposure is from tobacco use.

Charged particles from the sun and stars interact with the earth’s atmosphere to produce a shower of radiation.

Radon gas is the most important member of the uranium series.

Radon is lighter than air and rises up into upper floors of buildings.

Radon concentration doesn't vary depending on the uranium content of the underlying geology.

Radon gas can be found in natural spring or mineral waters from 'radon affected areas'.

Radon exposure can increase the risk of lung cancer due to beta radiation.

All people have radioactive carbon-12 in their bodies from birth.

Radionuclides accumulate in plants, feed, or water, but not in animals.

Nuclear weapons derive their explosive power from controlled radioactive break-up of plutonium and uranium.

After WW2, no country conducted atmospheric nuclear weapons tests.

Tobacco smoke contains radionuclides like polonium-210.

Lead-210 in tobacco smoke is deposited on bones.

Over 90% of total population exposure to man-made ionizing radiation comes from the diagnostic use of X-rays.