Browse Lemmas

Lemmas found: 37

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fire

combustion producing heat and light

Noun physical_phenomenon Level 135
flame

a hot glowing body of burning gas

Noun physical_phenomenon Level 135
wave

a ridge of water moving across the surface

Noun physical_phenomenon Level 135
force

power or energy as an attribute of action; in physics, an influence that causes an object to undergo a change in speed, direction, or shape

Noun physical_phenomenon Level 162
heat

the quality of being hot; thermal energy transferred from a hotter to a cooler body

Noun physical_phenomenon Level 162
power

in physics, the rate at which work is done or energy is transferred, measured in watts.

Noun physical_phenomenon Level 162
pressure

continuous force exerted on or against something

Noun physical_phenomenon Level 162
smoke

visible vapor produced by burning

Noun physical_phenomenon Level 179
thunder

the loud noise following lightning

Noun physical_phenomenon Level 219
sound

vibrations that travel through air and can be heard

Noun physical_phenomenon Level 221
rhythm

a strong regular repeated pattern of movement or sound.

Noun physical_phenomenon Level 274
wave

An oscillation or vibration transmitting energy through a medium or space.

Noun physical_phenomenon Level 274
noise

a sound, especially one that is loud, unpleasant, or disturbing

Noun physical_phenomenon Level 275
ray

a narrow beam of light or radiation.

Noun physical_phenomenon Level 275
gravity

the natural force of attraction that causes objects with mass to be drawn toward one another, especially the force that makes things fall toward the e...

Noun physical_phenomenon Level 280
blow

a powerful strike with a hand, fist, or weapon

Noun physical_phenomenon Level 285
flash

a sudden brief burst of bright light

Noun physical_phenomenon Level 290
knock

a sound made by striking a surface.

Noun physical_phenomenon Level 290
shadow

a dark area produced by an object blocking light

Noun physical_phenomenon Level 300
silence

complete absence of sound

Noun physical_phenomenon Level 300
boom

A loud, deep, resonant sound, especially one made by an explosion, cannon, or thunder.

Noun physical_phenomenon Level 350
resonance

A deep, clear, and continuing sound, especially one produced by an instrument or voice.

Noun physical_phenomenon Level 380
pop

A short, sharp explosive or bursting sound.

Noun physical_phenomenon Level 400
clap

A sharp sound made by striking the hands together or by something striking another thing.

Noun physical_phenomenon Level 440
tick

A short, sharp sound, especially one made by a clock or watch.

Noun physical_phenomenon Level 440
dipole

A magnetic dipole is a system with two equal and opposite magnetic poles, characterized by a magnetic dipole moment.

Noun physical_phenomenon Level 1399
electric dipole

An electric dipole is a pair of equal and opposite electric charges separated by a distance.

Noun physical_phenomenon Level 1399
electromagnetic interaction

The fundamental physical interaction between electrically charged particles, mediated by electric and magnetic fields and electromagnetic radiation.

Noun physical_phenomenon Level 1399
electromagnetic spectrum

The complete range of electromagnetic radiation, arranged by wavelength or frequency.

Noun physical_phenomenon Level 1399
fission

The splitting of an atomic nucleus into smaller nuclei, releasing energy and usually neutrons.

Noun physical_phenomenon Level 1399
inertia

The physical property by which an object remains at rest or continues in uniform straight-line motion unless acted on by an external force.

Noun physical_phenomenon Level 1399
jet

A narrow, forceful stream of liquid or gas projected from an opening.

Noun physical_phenomenon Level 1399
radiation

Energy emitted from a source and transmitted through space or a medium, especially as electromagnetic waves or particles.

Noun physical_phenomenon Level 1399
radiation

Harmful ionizing energy emitted by radioactive substances or produced in nuclear reactions.

Noun physical_phenomenon Level 1399
traction

Traction is the grip between a surface such as a tire or shoe and the ground that enables movement without slipping.

Noun physical_phenomenon Level 1399
ultrasound

Ultrasound is sound with a frequency above the upper limit of human hearing, generally above about 20,000 hertz.

Noun physical_phenomenon Level 1399
vacuum

A space containing little or no matter, especially one from which air has been removed.

Noun physical_phenomenon Level 1399