Podcast
Questions and Answers
A mixture in which particles are large enough to settle out is called a __________.
A mixture in which particles are large enough to settle out is called a __________.
Suspension
A ________ is a mixture in which particles are too small to settle but scatter light.
A ________ is a mixture in which particles are too small to settle but scatter light.
Colloid
The force that resists motion between two touching surfaces is called ________.
The force that resists motion between two touching surfaces is called ________.
Friction
A ________ is a push or pull exerted on an object.
A ________ is a push or pull exerted on an object.
A force that opposes motion through air is called ________.
A force that opposes motion through air is called ________.
The force pulling objects toward Earth is called ________.
The force pulling objects toward Earth is called ________.
The measure of the amount of matter in an object is called ________.
The measure of the amount of matter in an object is called ________.
A measure of the gravitational force acting on an object is called ________.
A measure of the gravitational force acting on an object is called ________.
What is the difference between a mixture and a compound?
What is the difference between a mixture and a compound?
How does a centrifuge separate a mixture?
How does a centrifuge separate a mixture?
Why is water called the "universal solvent"?
Why is water called the "universal solvent"?
How does increasing temperature affect the solubility of most solids in water?
How does increasing temperature affect the solubility of most solids in water?
What is the purpose of a control variable in an experiment?
What is the purpose of a control variable in an experiment?
What is the law of universal gravitation?
What is the law of universal gravitation?
How does air resistance affect falling objects?
How does air resistance affect falling objects?
Why does a hot-air balloon rise?
Why does a hot-air balloon rise?
What causes friction between two surfaces?
What causes friction between two surfaces?
How do you calculate concentration?
How do you calculate concentration?
Archimedes' principle states that the ________ force on an object in a fluid is equal to the weight of the displaced fluid.
Archimedes' principle states that the ________ force on an object in a fluid is equal to the weight of the displaced fluid.
A fast-moving fluid exerts ________ pressure than a slow-moving fluid.
A fast-moving fluid exerts ________ pressure than a slow-moving fluid.
________ is the forward force that moves an aircraft through the air.
________ is the forward force that moves an aircraft through the air.
The upward force that opposes gravity on an aircraft is called ________.
The upward force that opposes gravity on an aircraft is called ________.
What does Pascal's principle state?
What does Pascal's principle state?
The force that resists the motion of objects moving through a fluid is called ________.
The force that resists the motion of objects moving through a fluid is called ________.
How does a machine make work easier?
How does a machine make work easier?
The mechanical advantage of a machine is the ratio of ________ force to ________ force.
The mechanical advantage of a machine is the ratio of ________ force to ________ force.
A ________ is a simple machine that consists of a wheel and a rope, chain, or belt.
A ________ is a simple machine that consists of a wheel and a rope, chain, or belt.
An inclined plane wrapped around a cylinder is called a ________.
An inclined plane wrapped around a cylinder is called a ________.
The energy an object has due to its motion is called ________ energy.
The energy an object has due to its motion is called ________ energy.
The total energy of motion and position of an object is called ________ energy.
The total energy of motion and position of an object is called ________ energy.
The process by which plants convert light energy into chemical energy is called ________.
The process by which plants convert light energy into chemical energy is called ________.
A closed system is one in which no ________ is transferred in or out.
A closed system is one in which no ________ is transferred in or out.
The law of conservation of energy states that energy cannot be ________.
The law of conservation of energy states that energy cannot be ________.
A ________ resource is one that can be replaced as quickly as it is used.
A ________ resource is one that can be replaced as quickly as it is used.
The transfer of thermal energy by the movement of a liquid or gas is called ________.
The transfer of thermal energy by the movement of a liquid or gas is called ________.
The measure of how much energy is required to raise the temperature of a substance is called its ________.
The measure of how much energy is required to raise the temperature of a substance is called its ________.
A substance that reduces the transfer of heat is called a ________.
A substance that reduces the transfer of heat is called a ________.
The temperature at which the motion of particles theoretically stops is called ________.
The temperature at which the motion of particles theoretically stops is called ________.
What is Bernoulli's principle?
What is Bernoulli's principle?
Why do gliders need larger wings than jet planes?
Why do gliders need larger wings than jet planes?
What does Pascal's principle say about pressure in a fluid?
What does Pascal's principle say about pressure in a fluid?
Flashcards
Suspension
Suspension
A mixture with large particles that settle out.
Colloid
Colloid
A mixture with particles too small to settle but scatter light.
Friction
Friction
Force resisting motion between touching surfaces.
Force
Force
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Air resistance
Air resistance
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Gravity
Gravity
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Mass
Mass
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Weight
Weight
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Mixture
Mixture
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Compound
Compound
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Centrifuge
Centrifuge
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"Universal Solvent"
"Universal Solvent"
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Temperature effect on solid solubility
Temperature effect on solid solubility
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Control Variable (Purpose)
Control Variable (Purpose)
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Law of Universal Gravitation
Law of Universal Gravitation
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Effect of Air Resistance
Effect of Air Resistance
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Why Hot-Air Balloon Rises
Why Hot-Air Balloon Rises
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Cause of Friction
Cause of Friction
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Calculating Concentration
Calculating Concentration
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Archimedes' Principle
Archimedes' Principle
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Fluid speed and pressure
Fluid speed and pressure
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Thrust
Thrust
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Lift
Lift
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Pascal's Principle
Pascal's Principle
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Drag
Drag
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How machines make work easier
How machines make work easier
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Mechanical Advantage
Mechanical Advantage
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Pulley
Pulley
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Screw
Screw
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Kinetic Energy
Kinetic Energy
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Study Notes
- A mixture with large particles that settle out is a suspension.
- A mixture with particles too small to settle but scatters light is a colloid.
- Friction resists motion between two touching surfaces.
- Force is a push or pull on an object.
- Air resistance opposes motion through air.
- Gravity is the force pulling objects toward Earth.
- Mass measures the amount of matter in an object.
- Weight measures the gravitational force acting on an object.
- A mixture combines substances not chemically bonded.
- A compound contains elements chemically bonded in a fixed ratio.
- A centrifuge separates mixtures by density, spinning rapidly to settle denser materials.
- Water is the "universal solvent" because it dissolves more substances than any other liquid.
- Higher temperatures usually increase the solubility of solids in water.
- Control variables ensure only the independent variable affects results in experiments.
- The law of universal gravitation states objects attract each other proportionally to their masses and inversely proportional to the square of the distance between them.
- Air resistance slows falling objects, with greater resistance on larger surfaces.
- Hot-air balloons rise because heated air is less dense, creating buoyant force.
- Friction is caused by microscopic roughness interlocking on surfaces.
- Concentration is calculated by dividing the mass of solute by the volume of solvent (g/mL).
- Archimedes' principle: the buoyant force on an object equals the weight of displaced fluid.
- Faster fluids exert less pressure than slower ones.
- Thrust is the forward force moving an aircraft through air.
- Lift is the upward force opposing gravity on an aircraft.
- Pascal's principle: fluids in equilibrium exert equal pressure in all directions.
- Drag resists the motion of objects in fluids.
- Machines make work easier by changing size or direction of force.
- Mechanical advantage is the ratio of output force to input force.
- A pulley is a simple machine with a wheel and rope, chain, or belt.
- A screw is an inclined plane wrapped around a cylinder.
- Kinetic energy is the energy of motion.
- Mechanical energy is the total energy of motion and position.
- Photosynthesis converts light energy to chemical energy.
- A closed system does not allow energy transfer in or out.
- The law of conservation of energy states that energy cannot be created or destroyed, only transformed.
- Renewable resources can be replaced quickly.
- Convection transfers thermal energy through liquid or gas movement.
- Specific heat measures energy needed to raise a substance's temperature.
- Thermal insulators reduce heat transfer.
- Absolute Zero is when particle motion theoretically stops.
- Bernoulli's principle: fluid speed increases, pressure decreases.
- Gliders need large wings for lift because they rely on air currents.
- Pascal's principle: pressure applied to a confined fluid is transmitted equally in all directions.
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Description
Key science definitions covering topics like mixtures, forces, and solutions. Learn about suspensions, colloids, friction, gravity, mass, weight, compounds, and the role of water as a universal solvent. Understand the principles of the law of universal gravitation.
