What is the name of the teacher who teaches this subject?

• Kru Eight

• Kru Nine Sud Lhor

• Kru Ten

Which theory that explains the origin of the universe is widely accepted today?

• Big Bike Theory

• Big Bang Theory

• Big Boom Theory

• Barbie Theory

• Barber Theory

According to the Big Bang Theory, how did the universe begin?

• From a powerful explosion that created space and time

• From the collision of two galaxies

• From a large star turning into a black hole

What happened to the universe after the Big Bang?

• The universe got bigger and cooler over time.

• The universe stayed very small and hot forever.

• The universe turned into one giant black hole.

What happened to the number of particles and antiparticles after the universe began?

• There were more particles than antiparticles.

• There were more antiparticles than particles.

• The number of particles and antiparticles was equal.

• There were no particles or antiparticles.

What happens when a particle and its antiparticle meet?

• They become a helium atom

• They turn into a neutron

• They stay together and make a molecule

• They disappear and release energy

Which of the following is a form of energy?

• Photon

• Neutron

• Electron

• Proton

What were the first two elements formed in the early universe?

• Hydrogen

• Helium

• Oxygen

• Carbon

• Sodium

Which particles and how many of them are found in a helium atom?

• 1 proton and 1 electron

• 2 protons, 2 neutrons, and 2 electrons

• 2 protons and 2 electrons

• 1 proton, 1 neutron and 1 electron

What are protons and neutrons made of?

• Quarks

• Positrons

• Neutrinos

• Photons