Nuclear Power

An isotope of an element has the same number of _________, but a different number of _________.

• Protons, electrons
• Protons, neutrons
• Electrons, neutrons

Tags

NGSS.MS-PS1-1

What type of radioactive decay is shown here?

• Alpha decay
• Beta decay
• Gamma decay

Tags

NGSS.HS-PS1-8

Which type of radiation releases an electron?

• Alpha radiation
• Beta radiation
• gamma radiation

What type of radiation can be absorbed by skin or a piece of paper?

• Alpha radiation
• Beta radiation
• gamma radiation

Tags

NGSS.HS-PS1-8

What particle is released when an unstable isotope undergoes alpha radiation?

• a helium atom

• an electron
• an EM wave

• a helium nucleus

Tags

NGSS.HS-PS1-8

How many nucleons are in a nucleus of ?

• 19

• 20

• 39

• 58

Tags

NGSS.HS-PS1-8

Which type of radiation has the greatest ionising effect?

• α-particles

• β-particles

• γ-rays

• all have the same ionising effect

A Geiger counter detects radiation from radioactive sources.

A radioactive source is inside a thick aluminium container as shown:

Which type of radiation from this source is being detected?

• α-particles

• β-particles

• γ-rays

• radio waves

Tags

NGSS.HS-PS1-8

What occurs in the decay of a radioactive nucleus?

• The nucleus absorbs another nucleus.

• The nucleus absorbs at least one form of radiation.

• The nucleus always splits into two equal fragments.

• The nucleus emits at least one form of radiation.

Tags

NGSS.HS-PS1-8

A student investigates a radioactive source that emits only alpha-particles. Without any source nearby, the detector shows a low reading. The source and thick cardboard are placed near the detector, as shown:

What is the reading on the detector now, and why?

• A

• B

• C

• D