Thompson's Discoveries and Atomic Model

The video explores the groundbreaking discovery of the electron by JJ Thompson in Cambridge. It details the use of a particle accelerator to identify subatomic particles, revealing that electrons are much lighter than hydrogen atoms. The electron's discovery marked a shift in understanding atoms as indivisible, leading to modern applications in science. Thompson's initial atomic model, likened to a muffin, was later disproven, highlighting the evolving nature of scientific theories.

Where was the first clear evidence for smaller objects inside the atom found?

• Harvard

• MIT

• Cambridge

• Oxford

What was the key piece of equipment Thompson used in his experiments?

• Spectrometer

• Telescope

• Microscope

• Particle Accelerator

How much lighter were the particles Thompson discovered compared to hydrogen atoms?

• 2000 times

• 1000 times

• 500 times

• 1500 times

What was the first subatomic particle discovered by Thompson?

• Proton

• Neutron

• Photon

• Electron

Why is the electron considered a fundamental particle?

• It has no known substructure

• It is the heaviest particle

• It is the largest particle

• It is the most unstable particle

What modern technology relies heavily on the understanding of electrons?

• Wind turbines

• Solar panels

• Electron microscopes

• Nuclear reactors

What did Thompson's discovery reveal about the nature of atoms?

• Atoms are the smallest particles

• Atoms are indivisible

• Atoms are made of light

• Atoms contain smaller particles

What was Thompson's initial model of the atom compared to?

• A crystal

• A solar system

• A cloud

• A muffin

Who eventually proved Thompson's atomic model incorrect?

• Marie Curie

• Niels Bohr

• Ernest Rutherford

• Albert Einstein

What charge do electrons carry according to Thompson's model?

• Neutral

• Variable

• Positive

• Negative