Wordly Wise 3000, level 5, lesson 9

The air inside a hot-air balloon is heated. This makes it less ____________ than the surrounding cooler air and causes the balloon to rise.

• spectator

• dense

• terminate

• soar

Tags

CCSS.L.1.6

CCSS.L.3.6

CCSS.L.K.5A

In 1783 a large crowd assembled to watch the Montgolfier brothers' hot-air balloon. Among the ________________ were members of the French royal family.

• spectators

• dense

• terminate

• soared

Tags

CCSS.L.1.6

CCSS.L.3.6

CCSS.L.K.5A

The Montgolfier brothers' hot-air balloon reached a height of 1,500 feet. Its flight _______________ after it had been in the air for eight minutes.

• spectators

• dense

• terminated

• soared

Tags

CCSS.L.1.6

CCSS.L.3.6

CCSS.L.K.5A

Unlike a kite, the Montgolfier brothers' hot-air balloon was not attached to the ground. People watched in amazement as the balloon __________________ to a greated height.

• spectators

• dense

• terminated

• soared

Tags

CCSS.L.1.6

CCSS.L.3.6

CCSS.L.K.5A

A sheep, a duck, and a rooster were the first airborne creatures. Two months later, the first human flight in a balloon took place, a truly ________________ act.

• heroic

• accomplish

• suspended

• unwieldy

Tags

CCSS.L.2.4B

CCSS.L.3.2E

By 1900, there was great competition to build a successful heavier-than-air flying machine. The first to ________________ this goal would be famous.

• heroic

• suspend

• accomplish

• unwieldy

Tags

CCSS.L.2.4B

CCSS.L.3.2E

The Wright brothers made and repaired bicycles for a living. They _______________ their work on bicycles to concentrate on building heavier-than-air flying machine.

• heroic

• accomplished

• suspended

• unwieldy

Tags

CCSS.RI.3.10

CCSS.RI.4.10

CCSS.RI.5.10

CCSS.RI.6.4

CCSS.RI.7.4

Some early aircraft had as many as six wings, stacked above each other. Such airplanes were too ______________ to ever get off the ground.

• heroic

• accomplished

• suspended

• unwieldy

Tags

CCSS.L.5.4A

CCSS.RI.5.4

Modern aircraft have rigid wings. Early attempts to _______________ the flapping of birds' wings ended in failure.

• mimic

• flimsy

• absurd

• experimenting

Tags

CCSS.RI.3.10

CCSS.RI.4.10

CCSS.RI.5.10

CCSS.RI.6.4

CCSS.RI.7.4

The first aircraft designers had a problem in trying to reduce the plane's weight. The lighter the aircraft, the more ________________ it was.

• mimic

• flimsy

• absurd

• experimenting

Tags

CCSS.RI.3.10

CCSS.RI.4.10

CCSS.RI.5.10

CCSS.RI.6.4

CCSS.RI.7.4