Energy Conservation and Transfer Test

Which material is the best conductor of heat and electricity?

• plastic

• wood

• metal

• stone

Energy is transferred from the Sun to Earth mainly by_____________.

• conduction

• air currents

• electromagnetic waves

• mechanical waves

We see the sky as blue because of _____________

• reflection from the ocean

• absorption of ultraviolet rays

• scattering of blue light waves

• diffraction from water in the clouds

The main method of heat transfer occurring within water is called ____________.

• conduction

• convection

• radiation

• insulation

Thermal energy is transferred through a material by the collision of __________within the material.

• atoms

• waves

• crystals

• light

Which of the following waves is not visible to the human eye?

• red light

• violet light

• blue light

• ultraviolet light

What kind of energy does a moving baseball have?

• electrical

• mechanical

• magnetic

• chemical

Which of the following is the best insulator?

• copper

• gold

• aluminum

• wood

What is the primary source of energy for Earth?

• the Sun

• water

• the Moon

• rocks

What form of energy causes an ice cube to melt?

• mechanical

• sound

• magnetic

• thermal