Default Title

Question (11)

QN002241

If wind speed increases greatly, the air pressure above a roof will usually:

(A) Increase
(B) Decrease
(C) Become constant
(D) Become equal to indoor pressure

Correct Answer: B

Explanation:

Faster winds reduce pressure.

Link:

Report Error

Question (12)

QN002242

A fast-moving wind exerts a force of 900 N on a wall of area 15 m². Find the pressure.

(A) 45 Pa
(B) 60 Pa
(C) 75 Pa
(D) 13500 Pa

Correct Answer: B

Explanation:

Pressure = 900 ÷ 15 = 60 Pa

Link:

Report Error

Question (13)

QN002243

Which statement correctly explains why roofs may rise during storms?

(A) Pressure inside becomes lower than outside
(B) Fast-moving air above creates lower pressure outside
(C) Gravity stops acting on roofs
(D) Warm air inside disappears completely

Correct Answer: B

Explanation:

Lower outside pressure causes upward force.

Link:

Report Error

Question (14)

QN002244

Strong winds mainly create low pressure because the air:

(A) Stops moving
(B) Moves rapidly
(C) Becomes colder only
(D) Becomes heavier

Correct Answer: B

Explanation:

Rapidly moving air lowers pressure.

Link:

Report Error

Question (15)

QN002245

A pressure of 250 Pa acts over an area of 4 m². Calculate the force produced by the wind.

(A) 62.5 N
(B) 100 N
(C) 500 N
(D) 1000 N

Correct Answer: D

Explanation:

Force = 250 × 4 = 1000 N

Link:

Report Error

Question (16)

QN002246

Which type of pressure acts upward on a roof during a storm?

(A) Higher indoor air pressure
(B) Lower outdoor pressure
(C) Water pressure
(D) Soil pressure

Correct Answer: A

Explanation:

Greater indoor pressure pushes upward.

Link:

Report Error

Question (17)

QN002247

When fast-moving air passes over a roof, the pressure difference may:

(A) Pull the roof upward
(B) Push the roof downward only
(C) Stop air movement completely
(D) Reduce gravity on the house

Correct Answer: A

Explanation:

Pressure difference can lift the roof.

Link:

Report Error

Question (18)

QN002248

The phenomenon of lowering air pressure due to high-speed winds is related to:

(A) Still air only
(B) Movement of air
(C) Freezing of water
(D) Reflection of light

Correct Answer: B

Explanation:

Pressure changes are related to air movement.

Link:

Report Error

Question (19)

QN002249

A storm wind produces a pressure difference of 500 Pa across a roof of area 3 m². What upward force acts on the roof?

(A) 150 N
(B) 500 N
(C) 1000 N
(D) 1500 N

Correct Answer: D

Explanation:

Force = 500 × 3 = 1500 N

Link:

Report Error

Question (20)

QN002250

Which action can reduce the chance of roofs blowing away during storms?

(A) Closing all windows tightly
(B) Increasing pressure difference
(C) Allowing pressure balance inside and outside
(D) Painting roofs black

Correct Answer: C

Explanation:

Balanced pressure reduces lifting force.

Link:

Report Error

Question (11)

If wind speed increases greatly, the air pressure above a roof will usually:

Explanation:

Link:

Question (12)

A fast-moving wind exerts a force of 900 N on a wall of area 15 m². Find the pressure.

Explanation:

Link:

Question (13)

Which statement correctly explains why roofs may rise during storms?

Explanation:

Link:

Question (14)

Strong winds mainly create low pressure because the air:

Explanation:

Link:

Question (15)

A pressure of 250 Pa acts over an area of 4 m². Calculate the force produced by the wind.

Explanation:

Link:

Question (16)

Which type of pressure acts upward on a roof during a storm?

Explanation:

Link:

Question (17)

When fast-moving air passes over a roof, the pressure difference may:

Explanation:

Link:

Question (18)

The phenomenon of lowering air pressure due to high-speed winds is related to:

Explanation:

Link:

Question (19)

A storm wind produces a pressure difference of 500 Pa across a roof of area 3 m². What upward force acts on the roof?

Explanation:

Link:

Question (20)

Which action can reduce the chance of roofs blowing away during storms?

Explanation:

Link:

Excel With Tutors

ExcelWithTutors

For Student

For Tutors

Learn

OUR POLICY