GENERAL SCIENCE 1ST TERM EXAM

Distance

The total length of the path trave

Displacement

The change in position from the start pointing to the final position it includes direction

Speed

Distance traveled per unit time

Velocity

Displacement per unit time includes direction

Transitional motion

When an object moves from one place to another

Rational Motion

When an object rotates around an axis

Linear motion

What type of motion occurs along straight path

Nonlinear motion

What type of motion may involve a curved path

Displacement

What does θ (theta) symbolize

Human movement can involve both linear and angular quantities

What happens when the forearm rotates about the elbow

P= F / A

What is the formula for pressure

Pressure= Force÷ Area

How is pressure calculated

Pressure increases

What happens to the pressure when the same force is applied to a smaller area

It is a small edge produced greater pressure

What why does a sharp knife cut so easily

Pascal principle

Pressure applied to a confide fluid is transmitted equally throughout the fluid

Hydraulic brakes, hydraulic lifts, and hydraulic process

What are the application for pascal principle

A small force is applied to a smaller piston what happens

It produced a large pores on a large piston

Pascal principle

What principle does a hydraulic jack use

Pascal principle

What principle does an author repair shop hydraulic system use

What type of wave is a sound

A mechanical wave

What can soundproofing materials do

Reduce unwanted sound or noise

Recording studios and theaters

Where is sound commonly used

Reflected waves when the waves encounter a surface

What does a solar sonar system used to locate an object beneath the surface

Electromagnetic waves

What is useful for transmitting information over distance in a radio communication

Sound observing materials to reduce unwanted sound reflections.

What materials can be used to improve an auditorium sound

Last force is required

What happens when a lab report is applied farther from the pivot

It increases the turning effect of the applied force

Why does a longer handle makes lifting easier

Lever

What is simple machine mentioned in the reviewer

Wheel barrow

What compound machine combines a lever and a wheel and an axle

They make moving loads easier

Why are mechanical advantages useful in workplace

Using a machine that requires less effort

What is the priority when reducing worker effort

What is the principle explain how a light jacket works

Archimedes principle

Archimedes principle

What are the principal applied to a cargo ship carrying a heavy containers

A hot air balloon

What produce the buoyant force mentioned in the reviewer

Displace more water

What should the shape of rescue boat allow it to do as it loads increases

A greater volume with the same mass lowers an average density

Why can great volume lower average density

Mass alone determines an average density

A person's mass alone can determine whether they float or sink.why?

Angular velocity is greater

What happens to angular velocity when the same number of revolution is complete in the last time

The hip and knees joints

What joins rotates during walking

The same displacement can occur with the different distance traveled.

How can displacement and distance differ in the same laboratory

20m east and 40 m north

I drone travels 20 m east and 40 m north. What direction are involved in its displacement

Semiconductor technology

What technology do leds use

To reduce unnecessary electricity consumption and conserve energy

Why should we unuse appliance be turned off

What is the example of reducing unnecessary electricity consumption

Turning off lights when they are not needed

overloading

Connecting too many appliances to one outlet

Leds provide elimination while consumption relatively little electrical power

Why replace old classroom lightning with leds

Turn off all the lights, fans, and computers before leaving the room

How can a classroom minimize energy wastage

80%

What is 400 j ÷and 500 j x 100%

0.4226

What is sin 25°

479.09

What is 42 x 27 x 0.4226

1.525rad/s

What is 30.5 rad ÷ 20s

It's displacement also becomes greater because of displacement depends on initial and final position

What happens when an object moves farther

The design with the larger output to input area ratio

What should a business choose when comparing two hydraulic lips designs

A cargo ship applies archimedes principle, why i hydraulic jack applies pascal principle

What principle does a cargo ship use, compared with an hydraulic jack

The reviewer states that the machine is considered a patient when it's use uses more energy than it produces

What is efficient machine

What should be considered when choosing a aluminum foil for a design

Shape