J.J. Thomson Quiz

1. The corpuscle, now known as the electron, was discovered one hundred years ago by British Physicist, J.J. Thomson 100 years ago at the Cavendish Laboratory at Cambridge University.

False

True

The explanation for the given correct answer, which is "True," is that the corpuscle, which is now known as the electron, was indeed discovered by British Physicist J.J. Thomson 100 years ago at the Cavendish Laboratory at Cambridge University. This discovery was a significant milestone in the understanding of atomic structure and led to the development of modern atomic theory.

Explanation

The explanation for the given correct answer, which is "True," is that the corpuscle, which is now known as the electron, was indeed discovered by British Physicist J.J. Thomson 100 years ago at the Cavendish Laboratory at Cambridge University. This discovery was a significant milestone in the understanding of atomic structure and led to the development of modern atomic theory.

2. How does the cathode ray tube work?

The particles which are the electrons originate at the heated cathode, negative part of the tube, and then will rush to the anode which is the positive side of the tube. The stream the electrons create is what lights up the tube.

The particles which are the electrons originate at the heated anode, positive part of the tube, and then will rush to the cathode which is the negative side of the tube. The stream the electrons create is what lights up the tube.

A tube that contains cathode rays shooting through it. This creates the beam of light.

The correct answer explains that the electrons originate from the heated cathode, which is the negative part of the tube, and then rush towards the anode, which is the positive side of the tube. The stream of electrons creates the light in the tube.

Explanation

The correct answer explains that the electrons originate from the heated cathode, which is the negative part of the tube, and then rush towards the anode, which is the positive side of the tube. The stream of electrons creates the light in the tube.

3. What was the cathode ray tube?

A Glowing Glass Tube

A high vacuum tube in which cathode rays produce a luminous light

A beam of electrons emitted from a cathode

The cathode ray tube was a high vacuum tube in which cathode rays produced a luminous light. This means that when a high voltage was applied to the cathode, electrons were emitted and accelerated towards the anode, creating a beam of electrons. This beam of electrons then struck a phosphorescent screen, causing it to emit a glowing light. This technology was widely used in early television sets and computer monitors.

Explanation

The cathode ray tube was a high vacuum tube in which cathode rays produced a luminous light. This means that when a high voltage was applied to the cathode, electrons were emitted and accelerated towards the anode, creating a beam of electrons. This beam of electrons then struck a phosphorescent screen, causing it to emit a glowing light. This technology was widely used in early television sets and computer monitors.

4. When was the corpuscle discovered by Thomson?

One hundred years ago

Two hundred years ago

Fifty years ago

Thomson discovered the corpuscle one hundred years ago.

Explanation

Thomson discovered the corpuscle one hundred years ago.

5. How did J.J. know he discovered something smaller than the atom?

Atoms have neutral charges and these particles rushed from the negative to the positive terminals creating a ray of light.

He found the mass charge ratio and the particles rushed to the positive terminal and atoms have a positive charge.

J.J. knew he discovered something smaller than the atom because he observed that the particles rushed from the negative to the positive terminals, creating a ray of light. This suggests that the particles had a charge and were being attracted to the positive terminal. Since atoms have neutral charges, the presence of charged particles indicates the existence of something smaller than an atom.

Explanation

J.J. knew he discovered something smaller than the atom because he observed that the particles rushed from the negative to the positive terminals, creating a ray of light. This suggests that the particles had a charge and were being attracted to the positive terminal. Since atoms have neutral charges, the presence of charged particles indicates the existence of something smaller than an atom.

6. What was Thomson's bold proposal?

The mysterious rays are streams of particles much smaller than atoms, small pieces of atoms.

The mysterious rays are streams of atoms, grouped together, and negatively charged.

Thomson's bold proposal was that the mysterious rays are not streams of atoms, but rather streams of particles that are much smaller than atoms. He believed that these particles were small pieces of atoms, which challenged the prevailing belief at the time that atoms were indivisible. This proposal revolutionized the understanding of atomic structure and laid the foundation for the discovery of subatomic particles such as electrons.

Explanation

Thomson's bold proposal was that the mysterious rays are not streams of atoms, but rather streams of particles that are much smaller than atoms. He believed that these particles were small pieces of atoms, which challenged the prevailing belief at the time that atoms were indivisible. This proposal revolutionized the understanding of atomic structure and laid the foundation for the discovery of subatomic particles such as electrons.