World Book Trivia Challenge Advanced--3/5-dinosaurs
Questions and Answers
- 1.
About how long did dinosaurs rule the Earth?
- A.
150 million years
- B.
165 million years
- C.
170 million years
Correct Answer
B. 165 million yearsExplanation
Dinosaurs ruled the Earth for approximately 165 million years. They first appeared during the Triassic period, around 230 million years ago, and became extinct at the end of the Cretaceous period, about 65 million years ago. This long reign makes dinosaurs one of the most successful groups of animals in Earth's history.Rate this question:
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- 2.
What is a key difference, other than size, between dinosaurs and present day reptiles
- A.
Dinosaurs ate plants.
- B.
Dinosaurs laid eggs.
- C.
Dinosaurs were bi-pedal
Correct Answer
C. Dinosaurs were bi-pedalExplanation
However, dinosaurs also differed from present-day reptiles in many ways. For example, no modern reptiles grow as large as the biggest dinosaurs. In addition, many kinds of dinosaurs were bipedal—that is, they walked on their hind legs. Dinosaurs also had a different kind of leg posture. Lizards, turtles, and most other modern reptiles hold their legs out to the sides of their body in a low, sprawling posture. But dinosaurs held their legs under their body, much like those of a bird, a horse, a dog, or a person. This upright posture enabled dinosaurs to walk on all four legs without dragging their bellies on the ground.Rate this question:
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- 3.
Which is not a period of the Mesozoic Era?
- A.
Triassic
- B.
Jurassic
- C.
Plurassic
Correct Answer
C. PlurassicExplanation
Dinosaurs lived throughout most of the Mesozoic Era, which is divided into three periods—Triassic, Jurassic, and Cretaceous. The Triassic Period lasted from about 251 million to 200 million years ago. The Jurassic Period lasted from about 200 million to 145 million years ago, and the Cretaceous Period from about 145 million to 65 million years ago.Rate this question:
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- 4.
What was one of the first fossil discoveries that suggested dinosaurs used to roam the earth?
- A.
A claw from a T.Rex
- B.
Bones from a stegosaurs
- C.
Teeth from an Iguanodon
Correct Answer
C. Teeth from an IguanodonExplanation
Iguanodon was one of the first dinosaurs discovered. Mary Ann Mantell found Iguanodon teeth in Sussex, England, in 1822. Her husband, amateur geologist Gideon Mantell, gave the dinosaur its name in 1825. Iguanodon means iguana tooth.Rate this question:
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- 5.
Which dinosaur had the largest head of any animal ever to live on land?
- A.
Pentaceratops
- B.
Triceratops
- C.
Protoceratops
Correct Answer
A. PentaceratopsExplanation
One ceratopsian, Pentaceratops «PEHN tuh SEHR uh tahps», had the largest known head of any animal ever to live on land.Rate this question:
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- 6.
What were the majority of dinosaurs?
- A.
Plant-eaters
- B.
Meat-eaters
- C.
Only survived on water
Correct Answer
A. Plant-eatersExplanation
Most dinosaurs were plant-eaters. They probably fed on a wealth of leaves, small fruits, and seeds from Mesozoic plants. Some sauropodomorphs browsed on the leaves of trees and tall shrubs, while hadrosaurs chewed on the foliage of lower branches, shrubs, and ferns. Pachycephalosaurs, ankylosaurs, ceratopsians, and stegosaurs fed on low vegetation that grew along the edges of streams and rivers or on open plains.Rate this question:
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- 7.
What was Maiasaura known for?
- A.
Nesting habits
- B.
Bony armor
- C.
Horns
Correct Answer
A. Nesting habitsExplanation
Maiasaura, «MAY uh sawr uh», was a large plant-eating dinosaur noted for its nesting behavior. Its name means good mother lizard, though dinosaurs were not lizards. Evidence suggests that its hatchlings were completely dependent on their parents for food and protection.Rate this question:
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- 8.
Which fossils gave evidence to support that birds descended from reptiles?
- A.
Dimetrodon
- B.
Eryops
- C.
Archaeopteryx
Correct Answer
A. DimetrodonExplanation
The first Archaeopteryx fossils were found during the 1860's in Bavaria, a state in Germany. They provided the first solid evidence that birds descended from reptiles.Rate this question:
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- 9.
What was one of the smallest known dinosaurs?
- A.
Coelophysis
- B.
Seismosaurus
- C.
Compsognathus
Correct Answer
C. CompsognathusExplanation
Compsognathus, «komp SOG nuh thuhs», was one of the smallest known dinosaurs. It grew to about the size of a chicken or turkey, measuring around 21/2 feet (0.8 meter) long and weighing approximately 6 to 7 pounds (2.7 to 3.2 kilograms). The animal lived from 155 million to 145 million years ago, during the Late Jurassic Period.Rate this question:
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- 10.
On average, how many new discoveries and descriptions are made for new kinds of dinosaurs each year?
- A.
5
- B.
6
- C.
7
Correct Answer
C. 7Explanation
Today, most dinosaur discoveries are made in China, Mongolia, Argentina, and various parts of Africa. Many also occur in the United States and Canada. During the late 1900's, extensive research and fossil discoveries greatly increased the number of known dinosaurs. Scientists discover and describe an average of seven new kinds of dinosaurs every year.Rate this question:
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