DIRECTIONS: Read the Science News section on pages 4 to 7. Then, test your knowledge by filling in the letters of the correct answers below.
1. A(n) -- is a scientist who studies insects.
2. By offering sugared water to bees after exposing them to an explosive scent, scientists are teaching bees to
(A) stick out their antennas whenever they detect a bomb.
(B) find nectar in dangerous places.
(C) stick out their proboscises whenever they smell an explosive.
(D) use their antennas to dismantle bombs.
3. Which of the following statements about "the Dunk" is false?
(A) It was 33 meters long.
(B) It lived 400 million years ago.
(C) It could bile a shark in two.
(D) It could chomp down at a force of 500 kilograms per square inch.
4. In a recent study, scientists found that on average, U.S. teen girls drink approximately -- of non-diet soda each day.
(A) half a 12-oz can
(B) one 12-oz can
(C) one-and-one-half 12-oz cans
(D) two 12-oz cans
5. Fortified orange juice contains the -- growing teens need to build strong bones.
(A) Vitamin C
6. Forecasters predicted that 2006 would have a(n) -- number of Atlantic hurricanes, but their predictions fell short by --.
(A) above average, 19 percent
(B) alarmingly high, 27 percent
(C) below average, 35 percent
(D) above average, 50 percent.
7. Scientists found that Saharan dust storms interfere with hurricane formation by
(A) causing a brewing hurricane to move in a counterclockwise to move in a counterclockwise direction.
(B) slowing (learn tilt, winds with the mass of the sand.
(D) blocking a hurricane's path of movement.
(D) introducing dry air that breaks up a brewing hurricane's air currents.
(8) Which of the following is not a step in bat echolocation?
(A) A bat produces sounds with its mouths or nostrils.
(B) Sound waves produced by a bat bounce off objects.
(C) A bat detects faint echoes.
(D) Olfactory cells help a bat detect the direction of an object.
9. Frequency measures the
(A) height of a wave.
(B) number of vibrations per second.
(C) distance between two wave crests. (D) volume of a wave.
10. A black hole is
(A) an exploding star.
(B) a monstrous concentration of matter.
(C) a galaxy that move counter-clockwise.
(D) a dying star that is losing its light.
1. b 2. c 3. a 4. b 5. b 6. d 7. d 8. d 9. b 10. b
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|Title Annotation:||CHECK FOR UNDERSTANDING|
|Date:||Feb 19, 2007|
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