Spacecraft and Natural Science Quiz 5 - 6

A spacecraft is freed from friction launched into space.

• it

• it is

• after is

• after it is

Bears cannot see well small eyes.

• bears have

• because having

• because they have

• because of bears

A car has several sections with moving parts, essential.

• good lubrication

• well lubricated.

• and good lubrication

• and well lubricated

At the Isthmus of Panama, so animals were able to migrate between North and South America.

• A land bridge existed

• When a land bridge existed

• A land bridge

• With a land bridge

Pressure differences make the eardrum vibrate the ear.

• enters the sound waves

• as sound waves

• sound waves enter

• as sound waves enter

An optical microscope magnifies as much as 2,000 times, but an electron microscope as much as a million times.

• magnifying

• it magnifies

• can magnify

• magnify it

If scientific estimates are accurate, with the Earth about 20,000 years ago.

• the Cañon Diablo meteorite collided

• the collision of the Cañon Diablo meteorite

• the Cañon Diablo meteorite colliding

• colliding the Cañon Diablo meteorite