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Explain This!

How did this truck do a "headstand"?

The Lighter Side

TEASE YOUR BRAIN

Two fathers and two sons found three coins on the street. They divided the loot equally and each person got to keep one coin. Can you figure out how they did it?

'NET Raves

Log on to some amazing science Web sites.

! BUGSCOPE 99 Ever seen a fly's eye up close and personal? Check out this Web site, where teens display zoomed-in photos of nature's creepies.

bugscope.beckman.uiuc.edu/bugscope99/

! GALACTIC ODYSSEY High-schoolers created this excellent astronomy resource. Meet space pioneers, learn how rockets work, and watch videos of man's first step on the moon.

library.advanced.org/11348/

! AMUSEMENT PARK amusement park, a commercially operated park offering various forms of entertainment, such as arcade games, carousels, roller coasters, and performers, as well as food, drink, and souvenirs.  PHYSICS Just how safe are roller coasters While there have been hundreds of different roller coasters built, there have been just a few that were notable for specific reasons. Some reasons include:
  • first coaster of a specific kind, style, or manufacturing material; ground-breaking.
  • first use of unique technology.
 and other thrill rides? Detailed information gives you the science behind the fun--what makes rides work and riders scream.

www.learner.org/exhibits/parkphysics

CROSSWORD

[ILLUSTRATION OMITTED]

BUG ATTACK!

by Mona Chiang

ACROSS

(*) 1. Blood, to many parasites

(*) 4. Deer-tick disease

8. Animal museum

(*) 9. Rash color

10. Las Vegas Las Vegas (läs vā`gəs), city (1990 pop. 258,295), seat of Clark co., S Nev.; inc. 1911. It is the largest city in Nevada and the center of one of the fastest-growing urban areas in the United States. , -- (abbr.)

13. Report card average (abbr.)

(*) 15. Bug movement

(*) 18. Head parasite

(*) 20. Where 18 across feasts

22. Boat paddle

25. The boob tube (abbr.)

26. Mom's partner

(*) 28. Creepy crawly crawl·y  
adj. crawl·i·er, crawl·i·est Informal
1. Creepy.

2. Feeling as if covered with moving things.
 

(*) 30. Nits Nits
The eggs produced by head or pubic lice, usually grayish-white in color and visible at the base of hair shafts.

Mentioned in: Lice Infestation
 = lice --

(*) 31. Itch or follicle follicle /fol·li·cle/ (fol´i-k'l) a sac or pouchlike depression or cavity.follic´ular

atretic ovarian follicle  an involuted ovarian follicle.
 --

DOWN

(*) 1. Athlete's foot athlete's foot: see ringworm.
athlete's foot

Form of ringworm that affects the feet. In the inflammatory type, the infection may lie inactive much of the time, with occasional acute episodes in which blisters develop, mostly between the toes.
 culprit

2. Destination for Dorothy and Toto

(*) 3. Flea victim

5. Year (abbr.)

6. Cat call

7. Short for Edward

11. Al Gore's job (abbr.)

12. U.S. tax agency (abbr.)

14. Pie mode

15. and saucer

16. Three vowels

(*) 17. Very young insects

19. Used

21. Heavy, wooden shoe

23. ease

24. Chewable candy

26. Gym class (abbr.)

27. Movie rating (abbr.)

29. Action figure: --. --. Joe

(*) Starred clues relate to puzzle's theme.

FAST FACT: A female louse louse, common name for members of either of two distinct orders of wingless, parasitic, disease-carrying insects. Lice of both groups are small and flattened with short legs adapted for clinging to the host.  lays as many as 100 eggs during her 30-clay lifespan. The eggs take 8 to 10 clays to hatch.

What is it? Bicycle handlebar Bicycle handlebar or often bicycle handlebars refers to the steering mechanism for bicycles; the equivalent of a steering wheel. Besides steering, handlebars also often support a portion of the rider's weight, depending on their riding position, and provide a convenient  

Explain This The truck, moving at 58 kph (36 mph), crashed against a barricade made of steel pipes linked by a 2.5-cm (1-in.) wire-wrapped cable. The barricade's short height and immense weight (about 7,000 kg or 15,000 lbs) brought the front of the truck to a sudden halt, forcing the back to lift off the ground into a headstand. The impact also shoved the pipes forward a few meters. The government is testing these barricades to protect U.S. embassies against terrorist attacks.

Tease Your Brain One of the fathers is also a son. So you have only three people--a grandfather, father and son--and each one gets one coin!
COPYRIGHT 1999 Scholastic, Inc.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 1999, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Article Details
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Publication:Science World
Date:Sep 6, 1999
Words:430
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