S5E1
Which of the following is used for flood control? A) dams B)levees C)windbreaks D)both A and B
D) both A and B
Last Saturday, Mrs. Culliver wanted to make breakfast. First, she cracked several eggs into a bowl and stirred them. Second, she grated some cheese into the bowl. Third, she ground fresh black pepper into the bowl and stirred it all together. Finally, Mrs. Culliver emptied the contents of the bowl into a hot skillet and cooked the ingredients to perfection. Which of the steps listed above is NOT a physical change ? A)cracking the eggs into a bowl B) grating the cheese C) grinding the black pepper D) cooking the eggs
D) cooking the eggs
If you put the North (positive) end of one magnet next to the South (negative) end of a second magnet, what will happen? A) they will attract B)they will repel C)they will not move D)none of the above
A) they will attract
Which of the following describes a chemical change instead of a physical one? A)a copper bracelet gets twisted into a new shape B) a copper bracelet gets melted into liquid copper C) a copper bracelet turns green after it has been exposed to oxygen D) a copper bracelet is painted red
C) a copper bracelet turns green
Mr. James was looking at pictures of different mountain ranges in the United States. He was surprised to see that the Appalachian Mountains were smaller and more rounded than the Rocky Mountains, explain why the Appalachian Mountains look old and worn compared to the Rockies: A) the effect of wind and water caused erosion, wearing away the mountains B)Too many people and animals traveled across the mountains, causing them to wear away C)All of the snowfall was so heavy that it weighted down the mountains and caused them to shrink D)The water that used to cover Earth wore away parts of the mountains
A) the effect of wind and water caused weathering, wearing away the mountains (destructive)