Imagine you are standing in a farm field in central Illinois. The land is so flat you can see for miles and miles. On a clear day, you might see a grain silo 20 miles away. You might think to yourself, it sure is flat around here. If you drive one hundred miles to the south, the landscape changes. In southern Illinois, there are rolling hills. Why do you think this is? What could have caused these features? There are no big rivers that may have eroded and deposited this material. The ground is capable of supporting grass and trees, so wind erosion would not explain it. To answer the question, you need to go back 12,000 years. Around 12,000 years ago, a giant ice sheet covered much of the Midwest United States. Springfield, Illinois, was covered by over a mile of ice. Its hard to imagine a mile thick sheet of ice. The massive ice sheet, called a glacier, caused the features on the land you see today. Where did glaciers go? Where can you see them today? Glaciers are masses of flowing ice. 

Question: "What likely did not cause the changes in landscape in central Illinois?"

Answer: "Wind or water erosion"

Is this answer to the question correct?
OPTIONS:
- no
- yes
yes
Tänk dig att du står på en gård i centrala Illinois. Marken är så flack att man kan se miltals. På en klar dag, kan du se en kornsilo 20 mil bort. Du kanske tänker för dig själv, det är verkligen platt här. Om man kör 100 mil söderut, förändras landskapet. I södra Illinois finns böljande kullar. Varför tror du att det här är det? Vad kan ha orsakat dessa egenskaper? Det finns inga stora floder som kan ha eroderat och deponerat detta material. Marken är kapabel att stödja gräs och träd, så vinderosion skulle inte förklara det. För att svara på frågan måste du gå tillbaka 12 000 år. För omkring 12 000 år sedan täckte ett jättelikt inlandsisen stora delar av Mellanvästra USA. Springfield, Illinois, täcktes av över en kilometer is. Det är svårt att föreställa sig en kilometer tjock is. Det massiva istäcket, som kallas glaciär, orsakade dragen på det land man ser idag. Vart tog glaciärer vägen? Var kan du se dem i dag? Glaciärer är massor av strömmande is. Fråga: "Vad orsakade troligen inte förändringarna i landskapet i centrala Illinois?" Svar: "Vind- eller vattenerosion" Är det här svaret på frågan korrekt? ALTERNATIV: - nej - ja
Imagine standing on a farm in downtown Illinois. The ground is so flat, you can see miles. On a clear day, you can see a corn silo 200 miles away. You might think to yourself, it's really flat here. If you drive 1,000 miles south, the landscape changes. In southern Illinois there are rolling hills. Why do you think this is? What could have caused these qualities? There are no large rivers that may have eroded and deposited this material. The land is capable of supporting grass and trees, so wind erosion would not explain it. To answer the question, you have to go back 12,000 years. Some 12,000 years ago, a giant ice cap covered much of the Midwestern United States. Springfield, Illinois, was covered by over a kilometer of ice. It's hard to imagine a mile thick of ice. The massive ice sheet, called glacier, caused the drags of the land you see today. Where did glaciers go? Where can you see them today? Glaciers are lots of flowing ice. Question: "What probably didn't cause the changes in the landscape of central Illinois?" Answer: "Wind or water erosion" Is this the answer to the question correct? ALTERNATIVE: - no - yes
ja
yes