Magnets attract objects made of iron, such as nails and paper clips. They do not attract wood, plastic or paper. Which object would a magnet attract?
- AA sheet of paper
- BAn iron nail
- CA plastic cup
- DA wooden spoon
Magnets attract objects made of iron, such as nails and paper clips. They do not attract wood, plastic or paper. Which object would a magnet attract?
Dentists advise brushing your teeth twice a day for about two minutes with a fluoride toothpaste. Flossing once a day cleans between the teeth where a brush cannot reach. Why should people floss?
A doctor uses a stethoscope to listen to sounds inside the body, such as the heartbeat and breathing. What is a stethoscope used for?
“The temperature dropped below freezing overnight. In the morning, the puddles on the path were hard and slippery.” Why were the puddles hard?
Mount Everest grows about 4 millimetres taller every year. This happens because the Indian plate is slowly pushing against the Eurasian plate, forcing the land upward. What causes Mount Everest to grow?
“The city council voted to build a new library. Construction will begin in March and should take about eighteen months.” If construction begins in March this year, about when should it finish?
The author writes: “Many people skip the flu vaccine because they believe it can give them the flu. The injected vaccine contains no live virus, so it cannot cause the illness. Mild soreness or a low temperature for a day is a normal sign that the body is building protection.” What is the purpose of the last sentence?
“When the reporter asked the mayor about the delayed bridge project, the mayor talked at length about the new park and the town’s low crime rate.” What does the mayor’s answer suggest?
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