Radioactivity - Rutherford atom , Nuclear Energy, Using Radioact

Multiple Choice

What particle was used in the gold foil experiment?

• Beta Particle
• Alpha particle
• Gamma ray 

Multiple Choice

Most of the alpha particles went straight through the gold foil.  This suggested that....

• There is no interference between alpha and gold.
• Most of the atom is made up of empty space.
• The alpha particles were very tiny.
• None of the above

Multiple Choice

Some of the alpha particles fired at the gold foil were deflected at angles.  This was due to...

• reflection of the alpha source when it it the fluorescent screen.
• The alpha particles hitting the gold nucleus.
• Repulsion forces between the positively charged nucleus and the positively charged alpha particles. 
• A mis-firing of the alpha source

Multiple Choice

All atoms consist of mostly empty space.

• True
• False

Multiple Choice

Almost all of the mass of an atom is found in what part?

• The electron cloud
• The nucleus
• The protons
• The charge

Multiple Choice

Rutherford’s gold foil scattering experiment indicated that 

• the nucleus of an atom occupies most of an atom’s volume
• positive charges are dispersed throughout the atom.
• positive charges are concentrated in a very small core at the atom’s center
• protons and neutrons are located in the nucleus.

Multiple Select

Where does fusion take place?

• sun

• stars

• deep inside the earth

• nuclear reactors

Multiple Select

Where does fission take place?

• sun

• stars

• deep inside the earth

• nuclear reactors

Multiple Choice

The splitting of a nucleus into smaller nuclei is

• fusion
• fission
• half-life
• gamma radiation

Multiple Choice

Which of the following is true about nuclear fission?

• The mass of the product is greater than the mass of the original nucleus
• The mass of the product is less than that of the original nucleus
• The mass of the product is the same as the mass of the original nucleus
• The mass of the product is 100 times greater than the original nucleus

Multiple Choice

What is a chain reaction?

• When electrons travel are emitted causing electricity
• When a nuclear fission reaction occurs, the protons emitted can strike other nuclei in the sample, and cause them to split
• When a nuclear fission reaction occurs, the neutrons emitted can strike other nuclei in the sample, and cause them to split
• When a nuclear fission reaction occurs, the electrons emitted can strike other nuclei in the sample, and cause them to split

Multiple Choice

Two nuclei with low masses are combined to form one nucleus of larger mass is called what?

• Nuclear fission
• Nuclear fussion
• Nuclear half-life
• Half-life

Multiple Choice

Which of the following is true about nuclear fusion?

• It is easy to implement.
• It produces less energy than nuclear fission.
• It produces more energy than nuclear fission.
• It has the ability to occur easily in everyday life.

Multiple Choice

How do nuclear power-plants work?

• Fusion
• Half-life
• Fission
• Fusion or fission

Multiple Choice

Which material is responsible for initiating and continuing the chain reaction?

• neutron, ⁰₁n

• Uranium - 235, ²³⁵₉₂U

• Krypton - 90, ⁹⁰₃₆Kr

• Barium - 144, ¹⁴⁴₅₆Ba

Multiple Choice

Which of the following is NOT a true statement about nuclear fission?

• big atoms split apart

• it occurs naturally

• it produces radioactive waste

• it releases less energy than fusion

Multiple Choice

Which reaction represents fission?

Multiple Choice

Which reaction represents fusion?

Multiple Choice

Which of these is a use of alpha radiation?

• Sterilising food

• Smoke detectors

• Monitoring paper thickness

• Industrial tracers

Multiple Choice

Nuclear medicine (like radiation used in cancer treatment) is used to both diagnose and treat different diseases.

• True

• False

Multiple Choice

Radioactive tracers are useful in ____.

• calculating the ages of fossils 
• fueling nuclear reactions 
• determining medical problems 
• treating brain tumors 

Multiple Choice

For which of the following problems would a scientist most likely use carbon-14? 

• to calculate the age of the Earth's oldest rocks
• to calculate the age of a piece of bone 
• to identify the elements that make up a rock 
• to identify the elements that make up a bone