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48 Cards in this Set
- Front
- Back
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What is a mixture? |
When you put two or more materials together. |
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What is a pure substance? |
It is a pure material that is not a mixture. |
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What is a solution? |
A solution is a special mixture in which substances are spread out evenly and will not settle. |
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What is a solute? |
The substance that dissolves. For example, if you put salt into water, it dissolves. The salt is the solute. |
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When is something saturated? |
When a solution contains all of the solute that can be dissolved without changing the temperature. |
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What is concentrated? |
When a solution has so much solute that it is relatively close to being saturated. |
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What is a dilute? |
A solution that is far from being saturated. |
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What is a solvent? |
The liquid, that the solute will go into. |
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What are the 3 states of matter? |
Solid, liquid, and gas.
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What are some ways that you can organize the physical properties of matter? |
Color, odor, elasticity, weight, volume, mass, texture. |
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This chart represents? |
Metric units of measurement. |
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What happens to a solid that is heated? |
It melts and turns into a liquid. |
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What happens to a liquid that turns into a solid? |
A cold temperature was applied to it. |
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How does a liquid turn into a gas? |
Heat is applied to a boiling temperature and evaporates into a gas. |
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How is speed determined? |
Average speed = Distance Ex. 100 m 5 m ___________ ________ = _____ Time 20 s s |
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What are 3 types of motion? |
Constant, circular, periodic, variable, and vibrational. |
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What are the 3 forces in motion? |
Push, pull, and gravity |
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What is force? |
Is a push or pull that acts on an object. |
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How is gravitational force determined? |
It depends on the mass of an object and Earth's mass. |
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What are 2 examples that illustrate Earth's gravitational pull? |
Examples.... apple falling from the tree, pendulum swinging back and forth, satellite orbiting around Earth. |
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What is magnetism? |
Is a force that pushes and pulls on other objects. |
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Where is the magnetic force greatest? |
At it's poles. |
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What sides of a magnet are attracted to each other? |
North and South |
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What happens when you put a south magnetic pole next to another south magnetic pole? |
They will repel or move away from one another. |
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How is sound produced? |
It is produced through vibrating objects. Example- Guitar strings, violin strings, air through a instrument. |
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How can sound be changed? |
It can be changed by changing the vibration. |
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How does light travel? |
It travels in a straight line. |
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What is reflection? |
The bouncing of light or wave from a surface. |
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What is refraction? |
The bending of light or waves as it passes from one material to another. |
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What is transparent? |
Describes materials that let nearly all the light rays that hit them pass through. |
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What is translucent? |
Describes materials that let some light rays pass through but scatter some of the other rays. |
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What is opaque? |
Describes materials that do not let any light pass through them. |
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What is friction? |
A contact force that resists the movement of one surface past another surface. |
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What is this? And what does it do? |
It is an incandescent light bulb and it generates heat. |
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What is a conductor? |
A material through which elective charge flows easily. |
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What are some examples of a conductor? |
Metal objects. |
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What is an insulator? |
It is a poor conductor. It is material through which heat or electric charge does not flow. |
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What is electricity? |
The movement of electrons. |
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What causes an atom to have a negative or positive charge? |
When an atom gains electrons, it becomes negatively charged; when an atom loses electrons, it becomes positively charged. |
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How are conductors and insulators different? |
They are opposites: conductors allow electricity to flow easily and insulators stop its flow. |
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What is an electrical current? |
An electrical current is the flow of electric charges through a material. |
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What are three materials that are used as conductors and three that are used as insulators? |
Possible conductors: copper, silver, gold, and aluminum. Possible insulators: plastic, rubber, glass, and dry cotton. |
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In a simple circuit, if the switch is left open, what happens to the current? |
The circuit does not make a complete loop, so the current cannot flow. |
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Name four common parts of an electric circuit. |
battery, conductor, resistor, and switch |
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What is the purpose of a resistor? |
It is to transform electrical energy into another form of energy , such as sound, thermal (heat), or light. |
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Describe a parallel circuit. |
A parallel circuit is a circuit that has more than one branch or pathway. |
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What kind of circuit is this? |
Series Circuit. |
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What kind of circuit is this? |
Parallel Circuit. |
