Nuclear Fusion

Multiple Choice

Which force allows for high pressure and temperatures inside the sun?

• Gravity

• Pulling Force

• Magnetic Force

• Electromagnetic

Multiple Choice

What forces must balance for a star to form and maintain electrostatic equilibrium?

• The outward force of dark matter and inward force of dark energy

• Space and matter

• Negatively charged electrons and positively charged protons

• Inward force of gravity and outward force of nuclear fusion

Multiple Choice

Where does fusion occur naturally?

• Underwater

• All around us

• In the radioactive waste

• In the core of stars, like our sun

Multiple Choice

Which atoms combine together during fusion reaction in a star like our sun?

• Helium and Hydrogen atoms

• Hydrogen atoms

• Hydrogen and Lithium atoms

• Hydrogen and Carbon atoms

Multiple Choice

Stars have loads of proton - proton chain reactions happening in its core. What charge do protons have?

• neutral - no charge

• positive

• negative

• neutrino

Multiple Choice

Two atomic nuclei in MOST situations would

• Attract each other

• Repel each other

• Randomly fuse together

Multiple Choice

What are some of the outcomes of nuclear fusion?

• Produce larger materials from the collision of smaller materials.
• Release energy.
• Produce smaller materials from the collision of larger materials.
• Produce more massive materials from the collision of less massive materials & Release energy

Match

Match the following fusion reaction diagrams and explanations.

Proton-Proton chain reaction of H to He

Hydrogen fuses to create deuterium

Heium-3 fusion to create Helium-4

Helium-4 fuses to create Carbon-12

Deuterium fuses to create Helium-3

• Proton-Proton chain reaction of H to He

• Hydrogen fuses to create deuterium

• Heium-3 fusion to create Helium-4

• Helium-4 fuses to create Carbon-12

• Deuterium fuses to create Helium-3

Multiple Choice

Why does helium sink to the middle of the core?

• Helium has more mass

• Helium has less mass

• It doesn't

Multiple Choice

__________________ is the process in which two or more smaller nuclei combine to create a larger, more stable nuclei.

• Nuclear Decay

• Nuclear Fission

• Nuclear Fusion

• None of the above

Multiple Choice

During nuclear fusion in the sun, energy is released in the form of ____.

• Light and Heat

• Sound and Light

• Heat and Sound

• Light and Electricity

Multiple Choice

Why does nuclear fusion require high pressures and temperatures?

• To provide enough energy to split the nucleus.

• The two nuclei are both negatively charged and repel each other.

• To lower the cost.

• To overcome the electromagnetic repulsion of the nuclei.

Multiple Choice

In nuclear fusion, less massive atoms are forced together to create more massive atoms. Does this process release, absorb or maintain energy?

• Absorb energy
• Maintain energy
• Release energy

Multiple Choice

The process of forming elements is known as

• generation

• nucleosynthesis

• genesis

• synthesis

Dropdown

"Nuclear fusion" refers to the process of ​

Select answer

light nuclei merging to form a heavier ​

Select answer

. An example is the combination of 2 protons (hydrogen atoms) to create ​ deuterium.

"Stellar Nucleosynthesis" describes the ​ ​

Select answer

process of creating ​ elements within stars through a series of nuclear fusion reactions, leading to the production of ​

Select answer

elements like carbon, oxygen, and iron from ​

Select answer

elements like hydrogen.

Multiple Choice

Where does nuclear fusion occur in the sun?

• Surface

• Corona

• Core

• Convective zone

Multiple Choice

How many types of nucleosynthesis are there?

• 1
• 2
• 3
• 4

Multiple Choice

Light elements such as hydrogen and helium are formed through the process of __________ nucleosynthesis.

• big bang

• stellar

• fusion

• supernova

Multiple Choice

The process in which elements are formed at the center of a star.

• big bang nucleosynthesis

• nuclear fusion

• stellar nucleosynthesis

• supernova nucleosynthesis

Match

Match the following

core of a supergiant star

core of a main sequence star

core of a giant star

• core of a supergiant star

• core of a main sequence star

• core of a giant star

Multiple Choice

All elements bigger than iron on the periodic table are formed in _________________.

• Big Bang Nucleosynthesis
• Stellar Nucleosynthesis
• Supernova Nucleosynthesis
• Genonucleosynthesis

Multiple Choice

The splitting of a nucleus into smaller nuclei is

• fusion
• fission
• half-life
• gamma radiation