General Science Quarter Reviewer: Physics in Daily Life

Question 1

Why do car tires have tread patterns that are especially important on wet roads?

Accepted Answer

They help channel water away and maintain friction with the road

Answer

They reduce the car's mass while driving

Answer

They increase engine power during acceleration

Answer

They prevent air pressure from changing with temperature

Question 2

A train moving along a perfectly straight track is an example of rectilinear motion.

Accepted Answer

True

Answer

False

Question 3

Which situation best shows curvilinear translational motion rather than rotational motion?

Accepted Answer

A ball following a parabolic path after being thrown

Answer

A ceiling fan turning about its axle

Answer

A clock hand moving around the dial

Answer

A drill bit spinning in place

Question 4

In rotational motion, all parts of a rigid object move through the same angle in the same time.

Accepted Answer

True

Answer

False

Question 5

Which quantity is measured in radians per second?

Accepted Answer

Angular velocity

Answer

Linear acceleration

Answer

Displacement

Answer

Force

Question 6

Why does using a ramp help workers load a heavy box into a truck with less effort?

Accepted Answer

It reduces the needed input force by increasing the distance of motion

Answer

It decreases the distance over which the box is moved

Answer

It changes the direction of force without reducing effort

Answer

It increases pressure so the box becomes lighter

Question 7

A doorknob is a common example of a wheel-and-axle machine.

Accepted Answer

True

Answer

False

Question 8

Which device is best classified as a compound machine?

Accepted Answer

Manual pencil sharpener

Answer

Knife

Answer

Ramp

Answer

Single fixed pulley

Question 9

An efficient machine always has zero friction and converts all input energy into useful output work.

Accepted Answer

False

Answer

True

Question 10

If the same force is applied over a smaller area, what happens to the pressure?

Accepted Answer

It increases

Answer

It decreases

Answer

It stays the same

Answer

It becomes zero

Question 11

Why can a hydraulic lift raise a heavy car when the input force is relatively small?

Accepted Answer

Pressure applied to an enclosed fluid is transmitted equally throughout it

Answer

Liquids can create energy from nothing

Answer

The larger piston always moves a greater distance than the smaller piston

Answer

Gravity inside the fluid becomes weaker under compression

Question 12

In a fluid at rest, pressure generally increases as depth increases.

Accepted Answer

True

Answer

False

Question 13

According to Archimedes' principle, an immersed object experiences an upward buoyant force equal to the weight of the fluid it displaces.

Accepted Answer

True

Answer

False

Question 14

A sealed hollow steel ship can float mainly because it

Accepted Answer

displaces enough water for buoyant force to balance its weight

Answer

contains magnets that pull it upward

Answer

has no pressure acting on its bottom surface

Answer

removes gravity from the water around it

Question 15

Which situation is an example of energy wastage rather than unavoidable energy loss?

Accepted Answer

Leaving classroom lights on when no one is inside

Answer

A motor giving off some heat while running

Answer

A lamp producing a little heat while giving light

Answer

Sound produced by an electric fan in operation

Question 16

Charging a device overnight after its battery is already full is one example of energy wastage.

Accepted Answer

True

Answer

False

Question 17

Which safety practice best reduces the risk of overloading a circuit?

Accepted Answer

Using separate outlets for high-power appliances

Answer

Using one outlet for several high-power appliances at once

Answer

Covering warm extension cords with cloth

Answer

Daisy-chaining multiple power strips together

Question 18

Pure water with no dissolved substances is generally a better conductor of electricity than mineral-rich water.

Accepted Answer

False

Answer

True

Question 19

Which branch of physics is most directly involved when a metal spoon gets hot after sitting in a bowl of soup?

Accepted Answer

Thermal conduction

Answer

Refraction

Answer

Projectile motion

Answer

Centripetal force

Question 20

When a lamp is switched on, electrical energy is transformed mainly into light and heat.

Accepted Answer

True

Answer

False

General Science Quarter Reviewer: Physics in Daily Life

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