6.4 ENERGY

What is thee primary source of energy for Earth?

• The Sun
• Fossil fuels
• The Moon
• Electricity

Answer explanation

Jupiter is a gas giant made primarily of hydrogen and helium. Unlike terrestrial planets that have solid surfaces, gas giants like Jupiter don't have a well-defined solid surface, allowing them to accumulate more mass in a gaseous form. This composition has allowed Jupiter to grow significantly larger than planets with solid surfaces.

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Which energy source is formed from ancient plant material?

• Coal
• Solar energy
• Wind energy
• Nuclear energy

What process transfers heat through direct contact?

• Conduction
• Convection
• Radiation
• Electromagnetic spectrum

What is the definition of convection?

• Transfer of heat by fluid movement
• Heat transfer by direct contact
• Energy from the Sun
• Heat in solid objects

The sun’s energy reaches Earth through:

• Radiation
• Conduction
• Convection
• Chemical transformation

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What is the electromagnetic spectrum?

• The range of all types of radiation
• Heat flow in oceans
• Only visible light
• The Greenhouse Effect

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The greenhouse effect is:

• Warming of Earth by trapped heat
• The release of greenhouse gases
• Energy transformed to heat
• Heat from the core

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What energy transformation occurs when fossil fuels are burned?

• Chemical to thermal energy
• Electrical to light
• Nuclear to chemical
• Thermal to sound

How is energy transferred through space?

• Radiation
• Convection
• Conduction
• Electromagnetic flow

What role does the sun play in the formation of wind energy?

• Uneven heating of Earth’s surface
• Absorption by water
• Reflection by clouds
• Movement of tectonic plates

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