Science Summative Assessment

Pendulum

100

How does a pendulum work

When the swing is raised and released, it will move freely back and forth due to the force of gravity on it.

200

Why does a heavier pendulum swing slower

a heavy bob has lots of inertia, so the pendulum swings back and forth for a long time before it stops.

300

What causes a pendulum to swing

he force of gravity, pulling straight down, and the force by the pivot, pulling along the string, towards the pivot.

400

What forces act on a pendulum

its weight and the tension of the string.

500

How does a pendulum work physics?

The motion of a pendulum is a classic example of mechanical energy conservation. A pendulum consists of a mass (known as a bob) attached by a string to a pivot point. As the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashio

Amplitude

100

What is amplitude

Amplitude is the maximum displacement suffered by the particles of the medium from their mean. positions during the wave propagation 

200

What is the amplitude of a simple wave?

The amplitude of a wave refers to the maximum amount of displacement of a particle on the medium from its rest position.

300

The higher the amplitude

The higher the amplitude, the higher the energy.

400

How to find amplitude?

The amplitude of a trigonometric function is half the distance from the highest point of the curve to the bottom point of the curve: (Amplitude) = (Maximum) - (minimum) 2 

500

Where is amplitude from?

The Amplitude is the height from the center line to the peak or to the trough.

Vibration

100

What vibration means?

 a periodic motion of the particles of an elastic body or medium in alternately opposite directions from the position of equilibrium when that equilibrium has been disturbed

200

What makes a vibration?

bumping into nearby air molecules which in turn bump into their neighbours, and so forth.

300

What energy makes vibration?

In a vibrating system, there is a continuous exchange of potential energy with kinetic energy, but the total remains constant.

400

How do vibrations work?

A vibrating object moves back and forth from its normal stationary position. 

500

What force causes vibration?

Forced vibration occurs when an external force is applied to a system, causing it to vibrate at a specific frequency. 

Frequency

100

How does frequency work?

Frequency, sometimes referred to as pitch, is the number of times per second that a sound pressure wave repeats itself

200

What is frequency in a wave?

Frequency is a measurement of how often a recurring event such as a wave occurs in a measured amount of time.

  

300

Why is frequency used?

Frequency is an important parameter used in science and engineering to specify the rate of oscillatory and vibratory phenomena, such as mechanical vibrations, audio signals (sound), radio waves, and light.

400

Why do we use frequency?

It allows the researcher to have a glance at the entire data conveniently.

500

What creates a frequency?

The total number of waves produced in one second is called the frequency of the wave. The number of vibrations counted per second is called frequency.