wave

A gesture or sound that tells someone to act

A movement made to show meaning or give an instruction

A gesture used to call someone, like a nod or wave

A movement of the hand or body to signal someone

A small movement of the hand to say hello and show kindness

A small greeting or goodbye made by moving the fingers

Movements of the hands and arms that show feeling or make a point when you speak

A movement of the hand or arm to send a signal

A small playful hand movement to say hello or show affection

To use a current trend or chance while it lasts to get advantage

Make something happen quickly and without effort

To stop trying and accept that you lost

To use a rising trend or new interest to grow quickly

At the highest point of success or popularity for someone

To suddenly feel a very strong emotion that you cannot control

To gain from a sudden rise in public interest

A period of very hot weather that lasts several days

A sudden strong wave of air and energy that moves away from an explosion or impact

A group of artists or writers who introduce new ideas and styles

A pattern of electrical activity in the brain seen on an EEG

A wave of invisible energy that sends signals to radios and phones

A pattern of vibrations that moves through air, water, or solids and carries sound

A sudden very strong emotion or reaction that affects many people

A very large wave of water that suddenly rises along the coast and causes damage

A sudden rise in crime in an area in a short time

Radio wave that carries information when its strength, rate, or timing is changed

A ripple in space and time made by very strong events like colliding black holes

A math rule that shows how a wave moves and its size

A wave of energy made of changing electric and magnetic fields that travels at the speed of light

A radio wave that travels long distances and carries international broadcasts

A moving area of very high pressure in air after an explosion

A smooth repeating wave that goes up and down in a regular curved line

A slow, low energy brain rhythm that appears when a person is awake but relaxed or drowsy

A brain rhythm you have when you are awake and relaxed, often when you close your eyes or meditate

A wave in space that makes space and time stretch when very heavy things move, like two black holes colliding

A slow, large brain wave that appears during deep, dreamless sleep

A single wave that keeps its shape while moving at steady speed in some materials

A type of radio signal with waves longer than one kilometre used for long distance broadcasting

A movement in 1950s and 1960s French films that used new ways of telling stories and showing images

A surface that joins points a wave reaches at the same time, like light or sound

A small movement of the hand to say hello and show kindness

A small greeting or goodbye made by moving the fingers

A wave pattern with some points that stay still while parts between them move up and down

A signal to stop an approach and try again

A fast brainwave that appears when you are awake and thinking

A wave that carries sound through air, water, or a solid by vibrations

A math rule in quantum physics that shows how likely a particle is to be in a certain place

A sudden large amount of criticism aimed at someone or something

The idea that light and energy move as waves rather than particles

A wave of moving air that carries sound

A long heavy wave in the sea that moves toward the shore

A long period of much colder than usual weather that affects a large area

An equation that shows how waves such as light and sound move through space and materials

A count of repeating movements per metre of light or sound

A part of physics that explains atoms and very small particles as waves

A wave that moves through something and carries energy along its path

A physics idea that light and matter act like waves and particles when you look at them

A long-lasting set of curls in hair made with heat and chemicals

The line on a graph that shows how a sound or signal changes over time

A group of similar waves that follow each other at regular times

A radio band used for AM broadcasts with long waves that travel far at night

A bright red color that fills the sky at sunrise or sunset

The direction from which ocean waves approach the shore, measured from the shoreline

A sudden very strong feeling that you cannot control

A wave in the sea that has white foam and bubbles

A scientific idea that light moves as waves and makes bright and dark patterns

An equation that shows how tiny particles behave over time

A hairstyle with deep, regular waves made with a hot curling iron

A device that changes electricity that goes back and forth into a steady positive flow

An old name for a radio wave made by fast changes in an electric circuit

A radio wave that travels along the Earth's surface and follows its curve

A pattern where some points stay still and others vibrate strongly on a string or in air

A single wave that travels long distances without changing shape or losing energy

A wave that travels faster than the speed of sound in air or other materials

A radio wave sent into the sky that bounces off the ionosphere back to Earth

A sudden large number of people protesting at the same time

A moving pattern of brain activity that travels across different areas

A radio wave that bounces off the high air layer or a satellite back to the ground to travel far

The direction at which a radio signal comes to or leaves an antenna array, measured from the antenna's axis

A small playful hand movement to say hello or show affection