Discovery of Electrons (1-5)

Who became the director of the old Cavendish laboratory in 1896?

• Isaac Newton

• Albert Einstein

• Marie Curie

• JJ Thompson

What did JJ Thompson discover?

• The proton

• The neutron

• The electron

• The nucleus

How did Thompson's apparatus work?

• By accelerating particles

• By cooling particles

• By magnifying particles

• By splitting atoms

Tags

NGSS.HS-PS2-5

What did Thompson's measurements reveal about the particles he discovered?

• They were heavier than hydrogen atoms

• They were almost 2,000 times lighter than hydrogen atoms

• They were the same size as hydrogen atoms

• They were invisible

What analogy did Thompson use to describe the atom?

• A solar system

• A muffin

• A watermelon

• A chocolate chip cookie