Revise Models Using Everyday Examples - 5th Grade Science
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Which model revision fits the evidence that air can be compressed in a closed syringe?
Which model revision fits the evidence that air can be compressed in a closed syringe?
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Show gas particles moving closer together under pressure. Compression reduces space between particles without changing their number.
Show gas particles moving closer together under pressure. Compression reduces space between particles without changing their number.
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What does it mean to revise a scientific model based on evidence?
What does it mean to revise a scientific model based on evidence?
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Change the model so it matches new observations and data. Models must be updated when new data contradicts them.
Change the model so it matches new observations and data. Models must be updated when new data contradicts them.
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What is the best definition of evidence in science?
What is the best definition of evidence in science?
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Observations or measurements used to support or change an idea. Evidence provides factual basis for scientific conclusions.
Observations or measurements used to support or change an idea. Evidence provides factual basis for scientific conclusions.
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What is a particle model of matter used to represent?
What is a particle model of matter used to represent?
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Matter as tiny particles with spaces and motion. Shows matter consists of moving particles with empty space between them.
Matter as tiny particles with spaces and motion. Shows matter consists of moving particles with empty space between them.
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Which state of matter has particles far apart and moving freely: solid, liquid, or gas?
Which state of matter has particles far apart and moving freely: solid, liquid, or gas?
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Gas. Gas particles have maximum separation and freedom of movement.
Gas. Gas particles have maximum separation and freedom of movement.
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What should a model of air include to match the evidence that air takes up space?
What should a model of air include to match the evidence that air takes up space?
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Air must be shown as matter that occupies volume. Evidence shows air fills containers, proving it has volume.
Air must be shown as matter that occupies volume. Evidence shows air fills containers, proving it has volume.
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Identify the model change supported when a balloon expands as it fills with air.
Identify the model change supported when a balloon expands as it fills with air.
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Add that air has particles that take up space inside the balloon. Balloon expansion proves air particles occupy space.
Add that air has particles that take up space inside the balloon. Balloon expansion proves air particles occupy space.
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Identify the model change supported when air can be trapped in a syringe with the tip closed.
Identify the model change supported when air can be trapped in a syringe with the tip closed.
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Include that air is matter that can be contained. Trapped air proves it's matter that can be held in containers.
Include that air is matter that can be contained. Trapped air proves it's matter that can be held in containers.
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What model revision fits the evidence that a basketball feels harder after pumping more air in?
What model revision fits the evidence that a basketball feels harder after pumping more air in?
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More air particles increase pressure inside the ball. More particles in same space creates higher pressure.
More air particles increase pressure inside the ball. More particles in same space creates higher pressure.
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Which model revision matches the evidence that a sealed chip bag puffs up at high altitude?
Which model revision matches the evidence that a sealed chip bag puffs up at high altitude?
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Lower outside pressure lets trapped gas expand. Reduced external pressure allows internal gas to expand.
Lower outside pressure lets trapped gas expand. Reduced external pressure allows internal gas to expand.
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What does it mean for a substance to dissolve in water?
What does it mean for a substance to dissolve in water?
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Its particles spread evenly among water particles. Solute particles distribute uniformly throughout the solvent.
Its particles spread evenly among water particles. Solute particles distribute uniformly throughout the solvent.
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What is a solution?
What is a solution?
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A mixture where a solute is evenly dissolved in a solvent. Solutions have solute particles evenly distributed in solvent.
A mixture where a solute is evenly dissolved in a solvent. Solutions have solute particles evenly distributed in solvent.
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In saltwater, what is the solute?
In saltwater, what is the solute?
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Salt. The solute is the substance being dissolved.
Salt. The solute is the substance being dissolved.
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In saltwater, what is the solvent?
In saltwater, what is the solvent?
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Water. The solvent is the substance doing the dissolving.
Water. The solvent is the substance doing the dissolving.
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Which model revision matches the evidence that salt “disappears” but the water tastes salty?
Which model revision matches the evidence that salt “disappears” but the water tastes salty?
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Show salt particles still present, spread throughout the water. Dissolved salt remains as particles distributed in water.
Show salt particles still present, spread throughout the water. Dissolved salt remains as particles distributed in water.
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Which model revision matches the evidence that dissolved sugar cannot be removed with a strainer?
Which model revision matches the evidence that dissolved sugar cannot be removed with a strainer?
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Sugar particles are too small and pass through with water. Dissolved particles are smaller than strainer openings.
Sugar particles are too small and pass through with water. Dissolved particles are smaller than strainer openings.
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What model revision matches the evidence that stirring makes sugar dissolve faster?
What model revision matches the evidence that stirring makes sugar dissolve faster?
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Stirring increases particle mixing and contact. Motion helps particles collide and mix more quickly.
Stirring increases particle mixing and contact. Motion helps particles collide and mix more quickly.
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What model revision matches the evidence that warmer water dissolves sugar faster than cold water?
What model revision matches the evidence that warmer water dissolves sugar faster than cold water?
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Higher temperature means faster particle motion and mixing. Heat increases particle speed, promoting faster dissolving.
Higher temperature means faster particle motion and mixing. Heat increases particle speed, promoting faster dissolving.
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Which model revision fits the evidence that bubbles form when soda is opened?
Which model revision fits the evidence that bubbles form when soda is opened?
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Dissolved gas escapes as pressure drops and forms bubbles. Opening releases pressure that kept gas dissolved.
Dissolved gas escapes as pressure drops and forms bubbles. Opening releases pressure that kept gas dissolved.
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What revision is supported if a model shows dissolved salt settling at the bottom of a clear solution?
What revision is supported if a model shows dissolved salt settling at the bottom of a clear solution?
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Correct it: dissolved particles stay evenly mixed, not settled. True solutions don't settle; particles remain dispersed.
Correct it: dissolved particles stay evenly mixed, not settled. True solutions don't settle; particles remain dispersed.
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