Understanding Mass-Energy Equivalence and the Universe

What is the significance of Einstein's equation E=mc²?

• It is used to calculate gravitational force.

• It explains the relationship between mass and energy.

• It measures the temperature of stars.

• It describes the speed of light.

What event is described as the beginning of our universe?

• The creation of the first atom.

• The Big Bang.

• The first appearance of life on Earth.

• The formation of the first star.

How did energy transform after the Big Bang?

• It disappeared completely.

• It turned into matter over time.

• It remained unchanged.

• It became gravitational force.

What are the two main categories of energy?

• Nuclear and chemical.

• Kinetic and potential.

• Magnetic and gravitational.

• Thermal and electrical.

What does 'm' represent in the equation E=mc²?

• Magnetism

• Momentum

• Mass

• Motion

What is the speed of light approximately?

• 300,000 miles per second

• 300,000 miles per hour

• 300,000 kilometers per second

• 300,000 kilometers per hour

How much energy can be obtained from a one gram paperclip using E=mc²?

• 90 million gigajoules

• 90 million megajoules

• 90 million joules

• 90 million kilojoules

What is the most efficient current method of converting mass into energy?

• Wind turbines

• Solar panels

• Nuclear fission

• Burning coal

What happens to mass and energy in a closed system?

• They increase exponentially.

• They remain constant.

• They are created.

• They are destroyed.

What process kick-started the energetic process we call life?

• The appearance of the first planet

• The creation of the first black hole

• The ignition of stars

• The formation of the first galaxy