Science Test

Which force pulls objects toward the Earth?

• Gravity

• Magnetism

• Friction

What is the primary method of heat transfer in a vacuum?

• Conduction

• Convection

• Radiation

Which of the following materials is the best conductor of heat?

• Wood

• Plastic

• Copper

Which method of heat transfer requires direct contact between objects?

• Radiation

• Convection

• Conduction

Which of the following processes releases heat to the surroundings?

• Melting

• Evaporation

• Freezing

Which of the following colors of light has the shortest wavelength?

• Red

• Green

• Violet

What happens when light passes from air into water?

• It speeds up

• It bends away from the normal

• It slows down

Which phenomenon explains why a straw appears bent when placed in a glass of water?

• Reflection

• Refraction

• Diffraction

Which property of light causes a prism to separate white light into a spectrum of colors?

• Reflection

• DIspersion

• Absorption

What kind of lens would you use to correct nearsightedness?

• Concave lens

• Convex lens

• Plane lens