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IDIOM
An activity that helps strangers feel relaxed together is _______.
a. a snow melter b. a frost cracker c. an ice breaker
A. Answer the questions about On Thin Ice.
1. Main Idea What is the main idea of the article?
a. Polar bears are amazing swimmers.
b. Arctic temperatures are rising.
c. Global warming is endangering polar bears.
2. Inference Why was the polar bear that Nicklen saw swimming unlucky?
a. It fell in the water.
b. It was on an ice floe.
c. It had to swim farther.
3. Detail How do polar bears hunt seals?
a. They wait on ice floes.
b. They wait in the water.
c. They drown the seals.
4. Vocabulary In line 13, "a rare sight" means something that _______.
a. is horrible to look at
b. you don't see often
c. is blind
5. Inference Polar bears _______.
a. won't have any food in 2050
b. will all die before 2050
c. are struggling to find food
B. Complete the flow chart. Write the effects of global warming in the correct places.
a. Some polar bears drown.
b. Polar ice melts.
c. Temperatures rise.
d. Polar bears are in danger of becoming extinct.
e. Polar bears have to swim farther between ice floes.
1. ______ → 2. ______ → 3. ______ → 4. ______ → 5. ______
C. CRITICAL THINKING Talk with a partner. What other animals are being affected by global warming? Can you think of any ways to help?
