This reading comprehension explains the whys and whens of the autumnal equinox. This lesson is appropriate for both hemispheres. It is followed by 4 multiple choice questions, 1 short response and 4 short essay questions.
A very easy reading comprehension selection about cougars. This is one of a complete set on "big cats" from our member site. It is followed by 3 multiple choice questions and 3 questions that require brief written responses.
Reading comprehensions on the sun, incandescent light, light bulbs, electroluminescence, fluorescence, phosphorescence, bioluminescence, LEDs and LCDs... every type of light. A thoroughly informative unit!