A collection of facts and statistics collected together for reference or analysis.

To show something and explain how it works.

A measurement of the length, depth or height of an object.

To pull something across a surface with force. Example: The wings of an airplane have flaps that lift up to create a drag in the air that slows down the plane before it lands.

The physical or mental energy needed to accomplish a task.

Electricity is the flow of electrical power. Example: Lights are powered by electricity. The computers, printers, and video games in your houses use a lot of the electricity in your home (13%).

The movement of charged particles, negative (-) and positive (+). Example: Power plants burn fuel to make electricity that is then sent to homes and businesses through wires.

Electrons orbit the positively charged nuclei of atoms and are responsible for binding atoms together in molecules and for the electrical, thermal, optical, and magnetic properties of solids. Electric currents in metal and in semiconductors consist of a flow of electrons and light, radio waves, x-rays and much heat radiation are all produced by accelerating and decelerating electrons.

The ability to do work, power. Example: There are many types of energy that we use in our everyday life. Gasoline, petroleum, natural gas and electricity are some examples. In the United States we use 33% of our energy for manufacturing and industry, 28% for transportation, 21% for residential, and 18% for commercial.

A test done in order to learn or discover whether something works or is true.

The theory that describes how forces act on an airplane in flight including; physical descriptions, laminar airfoils, fluid dynamics, flow equations, and the axis of an airplane.

A push or pull capable of moving or changing an object. Example: Racing dragsters leave the starting line of a race with a force nearly five times that of gravity. That is the same force used by the space shuttle when it leaves the launch pad at Cape Canaveral!

The tension created when one object or thing slides against another object or thing. Example: By rubbing two sticks together quickly, you can create enough friction to cause heat. The heat generated by the friction can light a fire.

The point at which a bar or object is balanced or supported. Example: The pivot point on a seesaw.

The state in which a substance does not have a definite shape or volume. Example: Air, helium, and natural gas. Did you know that helium is lighter than air? That is why a balloon filled with helium floats but a balloon that you blow up with air from your lungs falls to the ground.

A unit of measurement equal to 1 thousandth of a kilogram. Example: There are 453.59 grams per pound. That means that a person weighing 150 pounds would weigh 68,038.5 grams.

A force that attracts objects toward one another. Example: Gravity at the equator is slightly less than at the North Pole because the Earth bulges at the equator making it farther from the center of the Earth.

A thing that has a disc or a wheel, which spins freely within it. Example: The first gyroscope was invented in 1743 and was used at sea to measure where the horizon was in foggy and low-visibility conditions.

An idea or explanation for something that is based on facts but has not yet been proven. Example: A guess as to why or how something happens.

The ability to form mental images or the ability to spontaneously generate images within one's own mind.

The property that keeps an object motionless unless a force is applied to it, or, keeps an object moving in a straight line unless a force is applied to it. Example: Your parents sleeping on the couch. A thrown ball would keep going straight if gravity and air-friction did not act on it.

To make or create something that no one else has. Example: To create the first cell phone.

A person who has invented something that no one else has. Examples: Thomas Edison invented the light bulbs that we use in our houses. Ellen Ochoa invented optical analysis systems and was also the first Hispanic female astronaut.

Kilo means 1000 when put in front of another word. Example: 1 kilogram equals 1000 grams.

Energy that pushes or pulls. Example: Sound, motion, heat, and electricity are all examples of kinetic energy. Water boiling is an example of heat kinetic energy.

Otherwise known as Newton's Laws of Motion. Three physical laws which provide relationships between the forces acting on a body and the motion of the body. I. Every object in the state of uniform motion tends to remain in that state of motion unless an external force is applied. II. The relationship between an object's mass (m), its acceleration (a), and an applied force (F) is F=ma. III. For every action there is an equal and opposite reaction.

A piece of glass or transparent substance with curved sides for concentrating or dispersing light. Example: A magnifying glass, camera lens, or telescope lens. Also, the part of the eye behind the pupil that focuses light into the retina so you can see.

A simple machine consisting of a rigid bar pivoted on a fixed point (fulcrum) used to move an object or thing.

To use a lever to exert force on an object. Example: The great pyramid of Giza was built in 2575 BC. It was over 50 stories tall. Levers were used to lift the stone blocks to the top of the structure. These blocks weighed up to 80 tons or 160,000 pounds, the same as 50 cars!

To raise to a higher position or level. Example: The Liebherr LTM 11200-9.1 crane can lift objects up to 328 feet in the air. That is taller than a 30 story building. Jet airplane wings with the help of the jet engines can lift the largest airplane An-225 Mriya weighing 1,411,000 pounds.

The state in which a substance has a definite volume but does not have a definite shape. Example: Water, milk, and oil are examples of liquids. Did you know that the earth has over 326 million trillion (326,000,000,000,000,000,000) gallons of water on it?

Any device that transmits or modifies energy. Example: Some of the simplest machines are inclined planes, wheels and axles, levers, pulleys, wedges, and screws.

The quantity of matter that any body contains. Example: On Earth we weigh our mass against the forces of the Earth's gravity.

Very large in amount, size, or number. Example: The tallest mountain in the world is Mount Everest. It is so massive it measures 29,035 feet tall.

Any substance that has mass, including gases, liquids, and solids which describe the three states of matter. Plasma is considered the fourth state of matter and is made up of free electrons and ions also known as ionized gas.

A machine that is used to make small objects look bigger. Example: This is how a human hair looks under a microscope.

The smallest unit of a substance made up of atoms. Example: There are over 300 million molecules of hemoglobin in a single red blood cell.

The force that keeps an object moving. Example: A car traveling at 70 mph needs a stopping distance of 324 feet to completely stop its forward momentum. Even with applying the brakes!

The set of nerves that runs from the eyeball into the brain that tells your brain what you see.

Something you think you see, but you really don't. Example: Dark patches appear where the white lines meet, except the ones that you are directly looking at.

A unit used to measure weight, smaller than a pound. Example: A man weighing 150 pounds also weighs 2400 ounces.

Science Concepts Flashcards

Student preview

49 questions

Show all answers

1.

FLASHCARD QUESTION

Front

Atmosphere

Back

The mixture of gases that surrounds the earth and other planets. Example: The earth's atmosphere is made up of 78% nitrogen, 21% oxygen, and 1% argon, carbon dioxide, and other trace gases.

2.

FLASHCARD QUESTION

Front

Attract

Back

To pull or draw someone or something towards oneself. Example: A magnet is attracted to objects with iron in them.

3.

FLASHCARD QUESTION

Front

Balance

Back

The point where two things are equal in weight or force. Example: Two teams pulling on a rope with equal force.

4.

FLASHCARD QUESTION

Front

Center of Gravity

Back

The center of mass of an object or thing. Also known as the point where gravity can be said to act. Example: In the human body, the center of gravity is an imaginary point that would exist if you crushed your body into a single, centrally located point. This point lies behind and just below the navel.

5.

FLASHCARD QUESTION

Front

Circuit

Back

A path that ends at its beginning. Example: A path where electrical current can flow in a circle.

6.

FLASHCARD QUESTION

Front

Column

Back

An upright shaft or pillar, or a vertical, roughly cylinder-shaped thing. Example: A great column of smoke.

7.

FLASHCARD QUESTION

Front

Compression

Back

To press something into a smaller space. Example: Your lungs can compress air into a balloon.

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