Lesson: The Fundamental Forces Physics • 9th Grade

Students will be able to

• recall that the gluon is the particle that mediates the strong interaction,
• recall what the symbol for a gluon is,
• recall that the photon is the particle that mediates the electromagnetic interaction,
• recall what the symbol for a photon is,
• recall that the and bosons are the particles that mediate the weak interaction,
• recall what the symbols for the and bosons are,
• recall that the and the are antiparticles of each other,
• recall that the strong nuclear force is the strongest of the four interactions,
• recall that gravity is the weakest of the four interactions,
• order the four interactions by their relative strength,
• recall the approximate range of the strong force,
• recall that the range of electromagnetism and gravity is infinite,
• recall whether the strong nuclear force, electromagnetic force, and gravity are attractive or repulsive,
• recall that the gluon, photon, and and bosons are all the types of bosons,
• recall that the strong nuclear force is what holds the nuclei of atoms together,
• recall that the weak nuclear force causes nuclear decay.