Coal and Petroleum/ Light

What is the law of reflection?

• The angle of incidence equals the angle of refraction

• The angle of incidence equals the angle of reflection

• Light always travels in curved lines

• Light always bends when it hits a surface

Which fossil fuel is considered the cleanest burning?

• Coal

• Petroleum

• Natural gas (CNG)

• Wood

What causes the persistence of vision?

• The ability of the retina to retain an image for about 1/16th of a second

• The reflection of light from objects

• The bending of light through a lens

• The absorption of light by the pupil

Which of these contributes most significantly to global warming?

• Water vapor

• Carbon dioxide emissions

• Solar radiation

• Ocean currents

What is myopia?

• The ability to see distant objects clearly

• The inability to see near objects

• The inability to see distant objects clearly

• Perfect vision in both eyes

Which type of combustion occurs when there is a limited supply of oxygen?

• Rapid combustion

• Complete combustion

• Spontaneous combustion

• Incomplete combustion

How does CNG (Compressed Natural Gas) benefit the environment?

• It produces more carbon dioxide than gasoline

• It releases more sulfur dioxide than diesel

• It produces fewer harmful emissions than other fossil fuels

• It increases ground-level ozone

What happens during complete combustion?

• Carbon monoxide is produced

• Only carbon dioxide and water vapor are produced

• Soot is formed

• Smoke is released

Which eye defect is corrected using a concave lens?

• Hypermetropia

• Astigmatism

• Myopia

• Color blindness

What is the primary advantage of using renewable energy sources?

• They are always cheaper than fossil fuels

• They are available in unlimited quantities

• They produce no waste at all

• They are easier to transport than fossil fuels