Quizzing the Seven Seas 203 
How old is the earth? (pages 75-77) 
What makes stars twinkle? (page 87) 
What causes mirages? (pages 86-87) rainbows? (pages 88- 
90) the “Northern Lights”? (pages 105-106) 
Are shooting stars really stars? (pages 106-107) 
How does rain cause lightning? (page 122) 
What causes winds? (page 127) hurricanes? (pages 130- 
131) waterspouts? (pages 133-134) 7 
What makes the “man in the moon’? (page 140) 
Is there life on Mars? (pages 149-150) 
What planet “smashes” atoms? (page 155) 
What is the earth’s largest animal? (page 165) 
Are all sharks “man-eaters’? (page 169) 
_ What fish has a suction disk on the top of its head? (page 
170) | 
What water animal moves by means of a sail? (page 173) 
What is the largest sea bird? (page 190) 
Are penguins birds? (page 195) 
