Air balloon

According to the passage, balloon pilots control the balloon’s altitude by

• moving into a different layer of air

• regulating the air temperature inside the balloon

• adjusting the amount of air in the envelope

As used in paragraph 3, which is the best synonym for ascend?

• Move

• Fly

• Climb

As used in paragraph 3, which is the best antonym for descend?

• fall

• float

• rise

According to the author, wicker is

I. comfortable

II. lightweight

III. durable

• I only

• I and II only

• II and III only

If the hot air balloon pilot wants to change directions during flight, what might he or she do to accomplish this?

• head toward a mountain peak

• wait for it to rain

• fly higher

Using the passage as a guide, it can be inferred that which of the following statements is not true?

• Air goes up and out the top of a chimney when you light a fire.

• Cool air collects about the ceiling when you open a refrigerator.

• Smoke from a candle rises after you blow out the flame.

Based on its use in paragraph 4, it can be understood that negligible belongs to which of the following word families?

• solemn, grave, serious

• substantial, considerable, large

• exhilarating, thrilling, exciting

• insignificant, small, unnoticeable