Physical Science Ch 10

Radioactivity is a tendency for an element or a material to

• radiate heat

• glow in the dark

• emit light

• emit radiation

Which of the beams is actually composed of particles?

• a

• b

• c

• a and c

Which of the beams is due to a positively charged helium nucleus?

• a

• b

• c

• all of the above

Which of the beams is due to a high energy electron?

• a

• b

• c

• none of the above

Which of the beams is due to an energetic light wave

• a

• b

• c

• all of the above

Which of the beams is due to alpha particles

• a

• b

• c

• all of the above

When the isotope of bismuth-213 emits an alpha particle, what new element results?

• polonium

• platinum

• thallium

• lead

Which of the following provides the minimum amount of protection you need to block gamma radiation

• lead suit

• suntan lotion

• thick leather

• t-shirt

You are given three radioactive samples (alpha, beta, and gamma) and can only dispose of one. The others you must keep in your hand and one in your pocket. How would you minimize your exposure risk?

• dispose of alpha, keep beta in pocket, keep gamma in hand

• keep alpha in pocket, dispose of beta, keep gamma in hand

• dispose of alpha, keep beta in hand, and keep gamma in pocket

• keep alpha in hand, beta in pocket, and dispose of gamma

Which of the following statements about radiation is true:

• radiation has no beneficial health applications

• radiation can be a useful too. Like fire, it is dangerous when misused

• radiation is new. It is man-made

• all of the above