Which nuclear equation represents a fusion reaction?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-8

The half-life of Uranium-235 is 700 million years. If there are 1000 g of Uranium-235 in the original sample, what happens after 2100 million years have passed? Select the TWO that apply.

• One half-life has passed

• Three half-lives has passed

• Two half lives has passed

• 125g of original sample remains

• 500 of original sample remains

Tags

NGSS.HS-PS1-8

Which statement best describes this type of reaction and the overall energy change that occurs? 

• The reaction is FISSION, and the thermal energy is absorbed into the nucleus

• The reaction is FUSION, and the thermal energy is released from the nucleus

• The reaction is FUSION, and the thermal energy is absorbed into the nucleus

• The reaction is FISSION, and the thermal energy is released from the nucleus

Tags

NGSS.HS-PS1-8

If these Lego blocks in the image represent the subatomic particles in a fission reaction, how would the parts be labeled?  (Note that the arrow below represents the arrow in the image!)

• A: Neutron, B: Uranium-235 -------> C: Krypton-92, D: Barium-141, E: Three Neutrons

• A: Neutron, B: Barium-141 -------> C: Krypton-92, D: Uranium-235, E: Three Neutrons

• A: Neutron, B: Krypton-92 -------> C: Uranium-235, D: Barium-141, E: Three Neutrons

• A: Neutron, B: Helium-4 -------> C: Hydrogen-1, D: Hydrogen-2, E: Three Neutrons

Tags

NGSS.HS-PS1-8

Plutonium-239 is a radioactive isotope commonly used as fuel in nuclear reactors. The half-life of Plutonium-239 is 24,100 years. About how long would it take 504 grams of Plutonium-239 to decay until there were only 63 grams Plutonium-239 left?

• 96,400 years

• 24,100 years

• 72,300 years

• 48,200 years

Which term below correctly identifies the process shown in the equation?

• beta decay

• gamma decay

• nuclear fusion

• alpha decay

Tags

NGSS.HS-PS1-8

Describe what is happening in this image. 

• A small nucleus combines with a larger one and splits, creating two larger atoms via fusion.

• A large nucleus absorbs a neutron and splits, resulting in smaller atoms via fission.

• A large nucleus absorbs a neutron and splits, resulting in smaller atoms via fusion.

• A small nucleus combines with a larger one and splits, creating two larger atoms via fission.

Tags

NGSS.HS-PS1-8

The table shows the decay of a sample of Vanadium-49 after three half lives. 

How many grams of Vanadium-49 did the sample begin with before it decayed?

• 44 g

• 352 g

• 176 g

• 990 g

Tags

NGSS.HS-PS1-8

What is the biggest disadvantage of using nuclear power to produce electricity?

• Nuclear fission produces less energy than burning coal or oil.

• Nuclear waste is radioactive and must be safely stored for many years.

• Nuclear waste must be incinerated (burned).

• Nuclear fission releases more air pollution than burning coal.

Tags

NGSS.HS-ETS1-3

NGSS.HS-LS2-7

Which is an advantage of using nuclear energy as a power source?

• The waste products created by a nuclear reaction are safe and reusable.

• There are additional nutrients provided to plant life from the nuclear waste.

• The power plants are very cheap and easy to build and security is not a concern.

• Zero air pollution energy can be produced 24-hours a day without regard to the sun and wind.