speed

Discusses different aspects of speed and describes how it is measured on land, in the water, and in the air. Includes activities that investigate the speeds of light and sound, the effect of friction, and more.

An energetic young girl rushes on the way to bake a cake.

Everyday examples, such as a motorcycle and a tricycle, demonstrate differences in speed.

A tortoise tries to find someone who will play with him at his own speed.

"Discover the vehicles that make it possible to travel fast-- from the quickest pedal-powered bicycles to twin-hulled hydroplanes, from rocket-powered cars to hypersonic aircraft"--P. [4] of cover.

Compares the speed of various animals, from humans to cheetahs to peregrine falcons, with even faster things like rockets, meteoroids, and light.

Describes some of the ways we measure how fast animals, people, vehicles, light, and other things move.

Photographs and illustrations help identify the longest, largest, fastest, and strangest high-speed vehicles found on Earth, including a jet-powered supercar, a monstrous digger, and the world's fastest plane.

Simple text and photographs present the world's fastest animals, such as the cheetah, the sailfish, the peregrine falcon, and the pronghorn antelope.

Ben is worried when his friend "Speedy" Sara slows down just before the soapbox race, but she is using science to improve her chances.