Science news

Science World, March 28, 2005

DIRECTIONS: Read the Science News section on pages 4 to 6. Then, test your knowledge by filling in the letter of the correct answer below.

1. By the--, gray wolves in North America were nearly extinct.

(A) 1850s

(B) 1900s

(C) 1950s

(D) 2000s

2. Currently, Yellowstone National Park is home to--gray wolves.

(A) 171

(B) 233

(C) 468

(D) 500

3. X-rays taken in 1968 revealed that King Tut's skull

(A) was smaller than a soccer ball.

(B) wasn't shaped like a human skull.

(C) was 3,000 years old.

(D) had a bone fragment.

4. The CT scan made a 3-D image of King Tut's body by

(A) beaming X-rays at 90[degrees] angles to his body.

(B) rotating X-rays around his body.

(C) dissecting his body with lasers, then photographing the parts using high-speed film.

(D) penetrating his body with ultraviolet waves.

5. Theobromine is

(A) a chemical compound in chocolate.

(B) a nerve cell.

(C) chocolate's main ingredient.

(D) another name for codeine.

6. Coughs are triggered when irritants stimulate--in the lungs.

(A) mucus

(B) chemicals

(C) nerves

(D) air pockets

7. Tides are caused by

(A) changing rainfall.

(B) tugging from the moon and sun on Earth's oceans.

(C) waves formed behind boats.

(D) heavy wind during storms.

8. Which statement is NOT true about last January's spring tide?

(A) It formed when the moon and sun lined up with Earth.

(B) It did not cause high tides.

(C) It caused a lower than normal low tide.

(D) It lowered the water level in Venice's canals.

9. A new ski jacket made by Motorola has a built-in control panel in the sleeve that communicates with the wearer's cell phone via

(A) radio waves.

(B) two wires.

(C) a microphone.

(D) the Internet.

10. Bluetooth technology relies on--to send signals between communication devices.

(A) high-speed cables

(B) vibrating energy waves

(C) phone lines

(D) an MP3 player

ANSWERS

1. b 2. a 3. d 4. b 5. a 6. c 7. b 8. b 9. a 10. b