Quiz Bee - JHS - Difficult

What is the principle stating that matter cannot be created or destroyed in a chemical reaction?

• Law of Conservation of Energy

• Law of Conservation of Matter

• Law of Conservation of Mass

• Law of Chemical Reactions

What is the value of 5¹⁰?

• 5,000,000

• 9,765,625

• 1,000,000

• 10,000,625

What is the layer of the Earth’s atmosphere where the ozone layer is found?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

A circle has a radius of 7 cm. What is its circumference? (Use π ≈ 3.14)

• 43.96 cm

• 22.12 cm

• 35.5 cm

• 50.24 cm

What type of heat transfer occurs when heat moves through direct contact between objects?

• Conduction

• Convection

• Radiation

• Insulation