TOEFL® Vocabulary ebook

Definition: Amplitude is the objective measurement of the degree of change (positive or negative) in atmospheric pressure (the compression and rarefaction of air molecules) caused by sound waves.

Example sentences:

Definition: Hard but liable to break easily

Example sentences:

• The Earth's crust, as with many planetary crusts, is brittle and breaks relatively easily.

Definition: selecting what seems best of various styles or ideas

Example sentences:

• The home, most recently featured in an issue of Interiors magazine, showcases an eclectic mix of antiques, flea market finds and contemporary art.
• She has an electric taste in music, from hard rock to classical.

Definition: Of or denoting a scale of temperature on which water freezes at 32° and boils at 212° under standard conditions

Example sentences:

• The temperature was steady at 65° Fahrenheit.

Definition: the quality of a color as determined by its dominant wavelength

Example sentences:

• When a full moon makes its closest approach to Earth, it appears slightly bigger and brighter than usual and has a reddish hue.
• The heat of the firework can help change the shade of the color, with hotter temperatures burning into paler hues.

Definition: Relating to or resulting from motion

Example sentences:

• For Wight, nature's timelessness transcends kinetic motion and the realm of the ticking clock.

Definition: Capable of being attracted by or acquiring the properties of a magnet:

Example sentences:

• Most materials are not ferromagnetic, but there are a variety of magnetic effects that other materials exhibit.
• That is that it is attracted by the magnetic field but does not remain magnetic once it leaves the field.

Definition: Give magnetic properties to; make magnetic

Example sentences:

• Because the string is magnetized, the magnetic field surrounding it will also vibrate with the string.
• Placing it close enough to a magnet or placing it in a strong electromagnetic field can magnetize non - magnetized magnetite.
• When the material is magnetized, usually by applying a high intensity pulse from an external magnetizing field, many of the individual domains rotate so that they are aligned with the external field.

Definition: Vary in magnitude or position in a regular manner about a central point

Example sentences:

• The light made the electrons in each atom oscillate back and forth from one side of the atom to the other

Definition: a tiny piece of anything

Example sentences:

• Particles of dust can destroy electronic instruments.
• At the smallest scales, everything in the universe can be broken down into fundamental morsels called particles.

Definition: Drive or force (an attack or attacker) back or away;(Of a substance) resist mixing with or be impervious to (another substance):

Example sentences:

• In the physical world, once an attacker is repelled, you follow up with counterattack
• The glass, coated with microscopic chemical coatings, has properties which repel moisture and dirt, allowing them to be washed away during normal rainy weather.

The noun “resonance” means the quality of a sound that stays loud, clear, and deep for a long time. Here is an example sentence:

• There is a great resonance in this singer’s voice

When you say a sound resonates, you mean that it fills the area with sound through vibrations. The result is a full, clear and deep sound for a long time.

In the meaning of filling a place with sound, both reverberate and resonate can be used, other than that reverberate highlights more the meaning of reflection while resonating highlights sounds in harmony and sound which become louder through vibration.

Therefore, when a sound reverberates in a room, it also resonates.

Here are example sentences using resonate

• The siren resonated throughout the city.
• The singing resonated throughout the stadium.
• The books on top of the piano resonate when he plays.

The noun “reverberation” can mean the echo of a sound. For example:

• When you bang on a big piece of metal, you can hear the reverberation even after you stop hitting it. ( Here you can replace reverberation with echo)

Reverberation can also mean the process of reverberating as in the following examples

• Low reverberation plays an important role in good acoustics.
• This wall absorbs the sound and prevents reverberation.

Definition: (Of electromagnetic radiation) having a wavelength shorter than that of the violet end of the visible spectrum but longer than that of X-rays

Example sentences:

• Most medical lasers emit light which are either ultraviolet, infrared or in the visible spectrum of light.

Definition: lively; full of action; bright

Example sentences:

• Music, rhythm and dance are the beating heart of two vibrant exhibitions in Paris.
• Her vibrant personality made her well liked by everyone.

Definition: An oscillation of the parts of a fluid or an elastic solid whose equilibrium has been disturbed or of an electromagnetic wave

Example sentences:

• In conventional superconductors, vibrations of atoms induce electrons, which normally repel each other, to form pairs

Definition: The distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave:

Example sentences:

• Unfortunately, Earth's atmosphere blocks almost all wavelengths in the electromagnetic spectrum. The most powerful telescopes in the world, spanning all wavelengths of the electromagnetic spectrum, were retooled and reprogrammed to observe the dying star. Visible light consists of a ‘rainbow’ or spectrum of electromagnetic waves of different wavelengths.