Fusion

When a neutral gas is heated, some of the ​electrons are freed from the atoms. The gas changes state and becomes a ​ (a)   . If electrons are freed from the atoms, these atoms become ​ (b)   which means they carry a positive or negative ​ (c)   .

• plasma
• ions
• charge
• suitcase
• solid
• liquid

What happens when an electrical current is pushed through a coil of wire?

• It short-circuits the wire rerouting the plasma out of the tokamak.

• It heats up the wire to a temperature to turn it in to plasma.

• It creates an magnetic field that is parallel to the wire.

• It creates a magnetic field perpendicular around the wire.

Is the fusion in the plasma she is describing hot or cold?

• hot

• cold

The Sun ​fuses ​ (a)   into Helium. In the fusion reaction she is describing on Earth, she is using Deuterium and ​ (b)   which are​ (c)   of Hydrogen. Deuterium has a different number of ​ (d)   than Hydrogen.

• Hydrogen
• Tritium
• splits
• isotopes
• neutrons
• electrons
• protons

Why is achieving fusion on Earth challenging?

• Because it requires low temperatures.

• Because it requires very high temperatures and densities.

• Because it needs a lot of space.

• Because it needs a lot of water.

What is produced in a fusion reaction involving deuterium and tritium?

• A proton and a helium nucleus

• A neutron and a helium nucleus

• A neutron and a hydrogen atom

• A proton and a neutron

The ​ (a)   produced by fusion has ​ (b)   energy which can be used to ​ (c)   a system to spin a ​ (d)   to produce​ (e)   .

• neutron
• kinetic
• heat up
• cool down
• potential
• generator
• electricity
• donuts
• electron