Science News.Name: -- 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. Which of the following statements about biodiesel is false? (A) It can be made from vegetable oils <onlyinclude> This list of vegetable oils includes all vegetable oils that are extracted from plants by placing the relevant part of the plant under pressure to extract the oil. . (B) When burned, it releases more carbon dioxide carbon dioxide, chemical compound, CO2, a colorless, odorless, tasteless gas that is about one and one-half times as dense as air under ordinary conditions of temperature and pressure. than gasoline does. (C) It can be made from animal fats. (D) When burned, it releases fewer pollutants than gasoline does. 2. At which country will Earthrace begin and end its round-the-world trek? (A) Barbados (B) Malta (C) Panama (D) New Zealand New Zealand (zē`lənd), island country (2005 est. pop. 4,035,000), 104,454 sq mi (270,534 sq km), in the S Pacific Ocean, over 1,000 mi (1,600 km) SE of Australia. The capital is Wellington; the largest city and leading port is Auckland. 3. Marshes off the Gulf Coast help protect the inland areas from hurricanes because they (A) absorb all of the wind's energy into the water. (B) block the wind and waves, preventing them from coming ashore. (C) deflect the wind, sending it to another direction. (D) slow down a storm's winds and waves. 4. A(n) -- is a time when Earth's climate is cool and large sheets of ice cover much of Earth's surface Noun 1. Earth's surface - the outermost level of the land or sea; "earthquakes originate far below the surface"; "three quarters of the Earth's surface is covered by water" surface . (A) polar glacial age (B) glacial period (C) Arctic freeze (D) polar era 5. A new study shows that the woolly mammoth became extinct because (A) warming temperatures after a long cold spell Noun 1. cold spell - a spell of cold weather cold snap while, spell, patch, piece - a period of indeterminate length (usually short) marked by some action or condition; "he was here for a little while"; "I need to rest for a piece"; "a spell of good caused the animals to lose their main food source. (B) of overhunting by humans. (C) they froze to death during the last ice age. (D) food became scare during Earth's deep freeze deep freeze see freezer. . As a result, they resorted to cannibalism cannibalism (kăn`ĭbəlĭzəm) [Span. caníbal, referring to the Carib], eating of human flesh by other humans. . 6. The concave-eared torrent frog is the first known -- to communicate by using ultrasound. (A) mammal (B) non-mammal (C) animal (D) invertebrate invertebrate (ĭn'vûr`təbrət, –brāt'), any animal lacking a backbone. The invertebrates include the tunicates and lancelets of phylum Chordata, as well as all animal phyla other than Chordata. 7. Ultrasound contains sound waves with frequencies too -- for humans to hear. (A) high (B) low (C) fast (D) slow 8. Scientists discovered that mountain gorillas snack on rotten wood to (A) exercise their jaws. (B) file their teeth. (C) obtain the needed sodium in their diets. (D) help fill their stomachs when food is scarce. 9. A recent discovery in Pakistan reveals that the dentist's drill had been in use as early as -- years ago. (A) 575 (B) 5,000 (C) 7,360 (D) 9,000 10. cavities are caused by (A) sticky foods that yank Yank steamship stoker vainly tries to climb the social ladder, then fails in attempt to avenge himself on society. [Am. Drama: O’Neill The Hairy Ape in Sobel, 339] See : Failure (jargon) yank away pieces of the tooth's enamel. (B) bacteria that produce acid, which eats away at the tooth's enamel. (C) chewing on hard substances, which can chip the tooth's enamel. (D) bacteria that eat the tooth's enamel. ANSWERS 1. b 2. a 3. d 4. b 5. a 6. b 7. a 8. c 9. d 10. b |
|
||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion