Untitled Quiz
40 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What happens to the potato slice placed in distilled water?

  • It loses all its water content.
  • It becomes larger and stiffer. (correct)
  • It remains the same size.
  • It becomes shorter and thinner.

What is diffusion?

  • Movement of particles from high concentration to low concentration. (correct)
  • The process of boiling water until it evaporates.
  • The movement of particles from areas of low concentration to high concentration.
  • A type of energy-consuming process.

What effect does temperature have on the rate of diffusion?

  • Higher temperature slows down diffusion.
  • Lower temperature increases the rate of diffusion.
  • Higher temperature increases the rate of diffusion. (correct)
  • Temperature has no effect on diffusion.

Which of the following is true about fluids?

<p>Fluids can yield easily to external pressure. (B)</p> Signup and view all the answers

What will be used to visualize diffusion in water during the experiment?

<p>Food coloring. (A)</p> Signup and view all the answers

What indicates that water molecules moved into the potato slice in the distilled water?

<p>The potato slice becomes larger. (D)</p> Signup and view all the answers

What apparatus is required to demonstrate diffusion with hot and cold water?

<p>Two transparent glasses. (B)</p> Signup and view all the answers

When a potato is placed in a salt solution, what happens?

<p>The potato becomes shorter and thinner. (D)</p> Signup and view all the answers

What is osmosis specifically referring to?

<p>The diffusion of water molecules (D)</p> Signup and view all the answers

What substance is used to create a salty solution in the experiment?

<p>Salt (D)</p> Signup and view all the answers

What should you do with the first potato slice after 25 minutes?

<p>Blot it gently on a paper towel (D)</p> Signup and view all the answers

How should the potato slices be placed in the petri dishes?

<p>In the bottom of the petri dish next to their tracings (A)</p> Signup and view all the answers

What is the purpose of tracing the potato pieces on the Potato Activity Sheet?

<p>To compare changes in their length after the experiment (A)</p> Signup and view all the answers

What does the rigidity or floppiness of the potatoes indicate?

<p>The state of osmosis occurring (A)</p> Signup and view all the answers

What should be done to the salty water before using it in the experiment?

<p>Stir it until the salt is completely dissolved (C)</p> Signup and view all the answers

What effect does the distilled water have on the potato slice?

<p>It allows water to diffuse into the potato (D)</p> Signup and view all the answers

What happens to the rate of diffusion of food color in water as the temperature increases?

<p>It speeds up. (B)</p> Signup and view all the answers

In the context of the meter bridge, what does R1 represent?

<p>The unknown resistance (D)</p> Signup and view all the answers

What does the equation ρ = R1wire A/L represent?

<p>The relationship between resistivity and resistance (C)</p> Signup and view all the answers

Which of the following correctly describes Archimedes' principle?

<p>It claims that buoyant force equals the weight of the fluid displaced. (D)</p> Signup and view all the answers

What is the first step in verifying Archimedes’ principle using a spring?

<p>Record the spring length in the air. (C)</p> Signup and view all the answers

When applying the buoyant force equation fb = ρ v g, what does fb represent?

<p>The buoyant force acting on the body (A)</p> Signup and view all the answers

In calculating buoyant force, what is the relationship outlined in fb = k∆L?

<p>Buoyant force is directly proportional to the spring's stretch. (D)</p> Signup and view all the answers

What does the slope of the graph between volume and change in spring length indicate?

<p>The density of the fluid (D)</p> Signup and view all the answers

What does Hooke's Law state about the extension of a spring?

<p>The extension is directly proportional to the force applied until the limit of proportionality is exceeded. (C)</p> Signup and view all the answers

Which variable is considered the independent variable in the experiment described?

<p>The stretching force (B)</p> Signup and view all the answers

What is the correct formula to calculate the weight of the masses applied to the spring?

<p>W = mg (D)</p> Signup and view all the answers

In a fair test of the spring experiment, which of the following should be controlled?

<p>The type of spring used (B)</p> Signup and view all the answers

What does ΔL represent in the equation F = -k ΔL?

<p>The extension of the spring (A)</p> Signup and view all the answers

Which piece of equipment is NOT mentioned as part of the apparatus for the experiment?

<p>A digital scale (D)</p> Signup and view all the answers

What is the purpose of keeping the control variables the same in the experiment?

<p>To ensure that the test remains fair and valid (C)</p> Signup and view all the answers

What is the significance of the limit of proportionality in Hooke's Law?

<p>It defines the maximum force that can be applied without permanent deformation. (A)</p> Signup and view all the answers

What is the relationship described by Ohm's law?

<p>Current is directly proportional to voltage at constant temperature. (B)</p> Signup and view all the answers

In the context of viscosity, what does Stokes's Law relate to?

<p>The terminal velocity and resistance of a ball in a liquid. (A)</p> Signup and view all the answers

Which instrument is used to measure electric current?

<p>Ammeter (A)</p> Signup and view all the answers

What does the letter 'ρ' represent in the density formula?

<p>Density (D)</p> Signup and view all the answers

How should you vary voltage when verifying Ohm's law?

<p>By changing the electric current and recording the voltage. (A)</p> Signup and view all the answers

What factors must be calculated when measuring viscosity with Stokes's law?

<p>Density of the ball and the liquid. (D)</p> Signup and view all the answers

What does a voltmeter measure?

<p>Voltage across the conductor. (A)</p> Signup and view all the answers

Which measurement is used to calculate the slope in a magnetometer experiment?

<p>Angle differences and cotangent values. (D)</p> Signup and view all the answers

Flashcards

Hooke's Law

The extension of a spring is directly proportional to the force applied, as long as the limit of proportionality isn't exceeded.

Independent Variable

The variable that is deliberately changed in an experiment to see how it affects the dependent variable.

Dependent Variable

The variable that is measured in an experiment to see how it responds to changes in the independent variable.

Control Variable

A variable that must be kept the same throughout an experiment to ensure a valid test.

Signup and view all the flashcards

Spring Constant (k)

A value that describes how stiff a spring is. A higher spring constant means a stiffer spring.

Signup and view all the flashcards

Extension (ΔL)

The change in length of a spring when a force is applied.

Signup and view all the flashcards

Stretching Force (F)

The force applied to a spring, often calculated as weight (W = mg).

Signup and view all the flashcards

Limit of Proportionality

The point beyond which Hooke's Law no longer applies—the spring no longer stretches proportionally to the applied force.

Signup and view all the flashcards

Diffusion in liquids

The movement of particles from an area of high concentration to an area of low concentration in a liquid.

Signup and view all the flashcards

Osmosis

The diffusion of water across a selectively permeable membrane.

Signup and view all the flashcards

Passive transport

The movement of particles across a membrane without requiring energy.

Signup and view all the flashcards

Potato Slices

Used to observe osmosis; potato slices have cell walls and contain water and dissolved materials.

Signup and view all the flashcards

Diffusion

The movement of particles from an area of high concentration to an area of low concentration.

Signup and view all the flashcards

Concentration gradient

The difference in concentration of a substance across a region.

Signup and view all the flashcards

Selective Permeability

Property of a membrane that allows some substances to pass through while others cannot.

Signup and view all the flashcards

Fluid

A substance with no fixed shape that yields easily to external pressure.

Signup and view all the flashcards

Temperature and diffusion

Warmer fluids allow particles to move faster, increasing the speed of diffusion.

Signup and view all the flashcards

Salt Solution

A solution containing dissolved salt in water.

Signup and view all the flashcards

Distilled Water

Pure water; it does not contain dissolved minerals or other substances

Signup and view all the flashcards

Potato osmosis

Water moves across a membrane from a higher concentration to a lower concentration, influencing potato size.

Signup and view all the flashcards

Measure Potato Length Change

Measure the length of a potato slice in both the water and salt solutions, noting any change, to monitor osmosis's impact.

Signup and view all the flashcards

Osmosis

Movement of water through a semipermeable membrane from high concentration of water to low concentration of water

Signup and view all the flashcards

Control Group

The group (water) in an experiment that is not exposed to the variable being tested

Signup and view all the flashcards

Diffusion in gases

Diffusion also occurs in gases, like the spread of odors.

Signup and view all the flashcards

Color Diffusion Rate

The speed at which a color spreads through a liquid, affected by temperature, water amount, and food coloring concentration.

Signup and view all the flashcards

Meter Bridge

A device used to determine unknown electrical resistance through a known resistance and a calibrated wire.

Signup and view all the flashcards

Resistivity (ρ)

A material's property describing how strongly it resists the flow of electrical current.

Signup and view all the flashcards

Wheatstone Bridge

A circuit configuration for finding unknown resistance using known resistances and measured lengths.

Signup and view all the flashcards

Archimedes' Principle

An object submerged in a fluid experiences an upward buoyant force equal to the weight of the fluid displaced.

Signup and view all the flashcards

Buoyant Force (Fb)

Upward force exerted by a fluid that opposes the weight of an immersed object.

Signup and view all the flashcards

Spring Length Change (∆L)

Difference in spring length when an object is submerged (or the change when loading a spring.)

Signup and view all the flashcards

Fluid Density (ρ)

Mass per unit volume of a fluid.

Signup and view all the flashcards

Ohm's Law

Electric current is directly proportional to voltage at a constant temperature.

Signup and view all the flashcards

Density (ρ)

Mass per unit volume.

Signup and view all the flashcards

Electric Current (I)

Flow of electric charge per unit time.

Signup and view all the flashcards

Voltage(V)

Potential difference between two points, driving force for current

Signup and view all the flashcards

Resistance (Ω)

Opposition to current flow in a material.

Signup and view all the flashcards

Magnetometer

Device used to measure magnetic fields or moments.

Signup and view all the flashcards

Viscosity

A liquid's resistance to flowing.

Signup and view all the flashcards

Terminal Velocity

Constant velocity reached by an object falling through a fluid.

Signup and view all the flashcards

More Like This

Untitled Quiz
6 questions

Untitled Quiz

AdoredHealing avatar
AdoredHealing
Untitled Quiz
55 questions

Untitled Quiz

StatuesquePrimrose avatar
StatuesquePrimrose
Untitled Quiz
18 questions

Untitled Quiz

RighteousIguana avatar
RighteousIguana
Untitled Quiz
48 questions

Untitled Quiz

StraightforwardStatueOfLiberty avatar
StraightforwardStatueOfLiberty
Use Quizgecko on...
Browser
Open
Browser
Browser