8 Questions
What is the analogy for radiation in the comparison with a light bulb?
The light emitted
Radioactive materials emit radiation indefinitely.
False
Who discovered radioactivity in uranium?
Henri Becquerel
Radioactivity is the power to emit __________________.
radiation
What happens to the radioactivity of radioactive materials over time?
It decreases
Match the following terms with their definitions:
Radioactivity = The power to emit radiation Radiation = The light emitted by the bulb Decay = The decrease in radioactivity over time
A light bulb's power to emit light increases with age.
False
What is the result of radioactivity decaying over time?
The amount of radiation decreases
Study Notes
Introduction to Radioactivity
- Radiation is compared to light emitted by a light bulb, where radioactive materials are the source of the radiation.
- Radioactivity is the power of radioactive materials to emit radiation, similar to a light bulb's power to emit light.
- As a light bulb ages, its power to emit light decreases, making the light weaker or non-existent.
- Similarly, as radioactive materials emit radiation, their radioactivity decays, and the amount of radiation decreases.
- Henri Becquerel discovered radioactivity in uranium in 1896.
This quiz introduces the concept of radiation and radioactive materials, explaining the relationship between them through an analogy with a light bulb.
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