Balance and Motion. Investigation 1: Balance. arch. A curved shape. balance. To stay in a position without being held. balance point. The place on which an object balances. clothespin. A clip of wood or plastic for fastening clothes on a clothesline. counterweight.
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A curved shape.
To stay in a position without being held.
The place on which an object balances.
A clip of wood or plastic for fastening clothes on a clothesline.
Something that helps to balance an object.
A freshwater shellfish.
A system of balance beams and objects.
Anything that can be seen or touched; a thing.
The place where a person or thing is.
Steady; not falling over.
A set of objects that are related in some way and can be isolated for study; a group of things or parts that form a whole.
A three-sided shape.
When something is not steady and falls over.
How heavy something is.
A bendable metallic strand or rod.
The force of air pushing on something.
A straight line around which something rotates.
An object that is a circle in only one direction and can fall over; a disk can be a wheel.
To firmly tie two pieces of material together.
The act of moving.
When something moves.
To turn in circles a lot of times; to spin.
Something that acts as an axis.
To turn by turning around an axis.
To turn in circles a lot of times; to rotate.
To spin or twist around and around.
A toy that spins.
To spin in the air.
A flying spinner.
To wind or turn something around.
To move or turn around quickly or suddenly.
The moveable appendages that birds and other animals use to fly.
A toy made from a plastic disk and a piece of string; it spins around when tension is released from the twisted string.
A rod or shaft to which wheels can be attached.
An opening that is made by curving a piece of material into a circle.
An object that has a slope.
A path over which something moves or lands.
A surface that is higher on one end.
An object that is round in all directions and rolls in all directions.
To move in a circular motion around a fixed center point.
An object that is a circle in only one direction and can fall over; a wheel is a disk.
A push or a pull.
A force that pulls things toward the Earth.
How high or low a sound is.
To move by turning over and over.
When a wheel goes around on its edge.
Steady, not falling over.
A fast back and forth motion. Vibration makes sound.
How loud or soft a sound is.