Aerospace Force Review

Mechanisms like levers and pulleys can...

• change the magnitude and direction of a force.
• change the direction, but not magnitude of a force.
• change the magnitude, but not direction of a force.
• can change neither the direction nor magnitude of a force.

Tags

NGSS.MS-ETS1-2

After an airplane passes through air molecules, the molecules are...

• moving downward.
• moving upward.
• moving chaotically.
• bouncing up and down over and over.

Tags

NGSS.MS-PS2-5

How much a wing is inclined compared to the direction of motion is...

• angle of attack.
• angle of inclination.
• angle of defense.
• spangle your bangle.

Tags

NGSS.HS-PS2-1

In STEM, 'fluid' refers to...

• gases and liquids.
• liquids.
• solids.
• gases and plasmas.
• Bose-Einstein condensates and photonic matter.

For a flowing fluid, if speed increases...

• pressure decreases.
• pressure increases.
• mass rate increases.
• mass rate decreases.

An object between regions of high and low pressure...

• moves towards the low pressure region.
• moves towards the high pressure region.
• is stable.
• implodes.
• is dynamically unstable, but statically stable.

The relationship between fluid velocity and pressure is called...

• Bernoulli's Equation.
• Coanda effect.
• Newton's Laws.
• Magnus effect.
• Euler-Lagrange Equation.

The phenomenon where moving fluid tends to stick to a curved surface is called...

• Coanda effect.
• Bernoulli's equation.
• Newton's Laws.
• Reynold's number.

What happens if the Coanda effect is not maintained on a wing surface?

• the airplane stalls.
• fuel efficiency drops.
• speed decreases.
• pressure decreases.

The strange fact that a rotating cylinder can generate lift is known as...

• Magnus effect.
• Coanda effect.
• Bernoulli's equation.
• Viscosity.