Science EOQ 4 Exam 2023-2024
70 Questions
82 Views
4.7 Stars

Science EOQ 4 Exam 2023-2024

Created by
@SeasonedPluto

Questions and Answers

Gabrielle pulls a toy car 10 meters with a force of 200N. How much work has she done?

2000 j

Jack drags a shopping bag for 1000 meters with a force of 150N. How much work was done?

150,000j

. A 5kg cat is lifted 2m into the air. How much GPE does it gain? (Round gravity to 10 instead of 9.8)

100 j

A larger box with a mass of 70kg is lifted 5m in to the air. How much GPE does it gain? (Round gravity to 10 instead of 9.8)

<p>3,500 j</p> Signup and view all the answers

An angry bull with a mass of 700kg runs at 10 m/s. How much kinetic energy does it have?

<p>35,000 j</p> Signup and view all the answers

A waddling armadillo of mass 6kg moves at 5 m/s. How much kinetic energy does it have?

<p>75 j</p> Signup and view all the answers

Look at the diagram. Calculate the net force. Include the net force and the direction (left, right, up, or down) in your answer.

<p>4N left</p> Signup and view all the answers

Look at the diagram. Calculate the net force. Include the net force and the direction (left, right, up, or down) in your answer.

<p>2N left</p> Signup and view all the answers

Friction is a contact force.

<p>True</p> Signup and view all the answers

Magnetism is a contact force.

<p>False</p> Signup and view all the answers

Gravity is a contact force.

<p>False</p> Signup and view all the answers

Tension is a contact force.

<p>True</p> Signup and view all the answers

Air resistance is a contact force.

<p>True</p> Signup and view all the answers

Light is a type of kinetic energy.

<p>True</p> Signup and view all the answers

Gravitational energy is a type of kinetic energy.

<p>False</p> Signup and view all the answers

Elastic is a type of kinetic energy.

<p>False</p> Signup and view all the answers

Thermal energy is a type of kinetic energy.

<p>True</p> Signup and view all the answers

Using the 5 senses to help learn more about something (sight, hearing, tasting, feeling, and smelling)

<p>Observing</p> Signup and view all the answers

Forming an idea of why something happened in the past based on observations

<p>Inferring</p> Signup and view all the answers

Forming an idea of what will happen in the future based on observations

<p>Predicting</p> Signup and view all the answers

Organizing or separating things by how they are alike or different

<p>Classifying</p> Signup and view all the answers

Finding the size, mass, volume, distance, weight, or temperature of anything. Involves numbers and units

<p>Measuring</p> Signup and view all the answers

Conducting controlled test that will help determine if a hypothesis is correct.

<p>Experimenting</p> Signup and view all the answers

Looking at the data and finding patterns

<p>Analyzing data</p> Signup and view all the answers

Using the information gained to try to explain or understand something. Figuring out what the patterns mean.

<p>Interpreting Data:</p> Signup and view all the answers

The force that opposes motion between objects that are in contact.

<p>Friction</p> Signup and view all the answers

An object's resistance to changes in motion.

<p>Inertia</p> Signup and view all the answers

How fast an object is traveling. Calculated by dividing distance by time.

<p>Speed</p> Signup and view all the answers

How fast an object is traveling and the direction the object is traveling.

<p>Velocity</p> Signup and view all the answers

Any change in an object's speed or direction. (change in velocity)

<p>Acceleration</p> Signup and view all the answers

A change in an object's position.

<p>Motion</p> Signup and view all the answers

Models are used to study things that are too big, too small, too distant, or too complicated to study through direct observations. Which is NOT a model?

<p>a list of supplies in a science lab</p> Signup and view all the answers

John is drawing diagrams to demonstrate the ways light can travel. What should he label box one?

<p>Transmit</p> Signup and view all the answers

John is drawing diagrams to demonstrate the ways light can travel. What should he label box on two?

<p>Reflect</p> Signup and view all the answers

John is drawing diagrams to demonstrate the ways light can travel. What should he label box three?

<p>Absorb</p> Signup and view all the answers

John is drawing diagrams to demonstrate the ways light can travel. What should he label box four?

<p>Refract</p> Signup and view all the answers

Look at the wave diagram. What property of a wave is shown at point 1?

<p>Wavelength</p> Signup and view all the answers

Look at the wave diagram. What property of a wave is shown at point 2?

<p>Trough</p> Signup and view all the answers

Look at the wave diagram. What property of a wave is shown at point 3?

<p>Amplitude</p> Signup and view all the answers

Look at the wave diagram. What property of a wave is shown at point 4?

<p>Crest</p> Signup and view all the answers

Which electromagnetic wave is located at position 2?

<p>Microwave</p> Signup and view all the answers

Which electromagnatic wave is located at position 7?

<p>Gamma</p> Signup and view all the answers

In which position would you find visible light?

<p>4</p> Signup and view all the answers

Where on the diagram would the ball have the most potential energy?

<p>A</p> Signup and view all the answers

Where on the diagram would the ball have the most kinetic energy?

<p>D</p> Signup and view all the answers

What are the forces that work against inertia?

<p>Friction and Gravity</p> Signup and view all the answers

What determines the amount of inertia an objects has?

<p>Mass</p> Signup and view all the answers

A scientist must repeat his/her experiment several times and get the same results. What is this process called

<p>Repetition</p> Signup and view all the answers

Scientists will often repeat another scientist's experiment to see if the first results are valid. What is this process called?

<p>Replication</p> Signup and view all the answers

If A scientist wants to ensure their results are reliable, what should they focus on?

<p>Consistent repetition</p> Signup and view all the answers

What does a Scientific Law do?

<p>State what will always occur in natural conditions.</p> Signup and view all the answers

What is a hypothesis?

<p>A statement that can be tested</p> Signup and view all the answers

What is the difference between a scientifc law and a scientific theory?

<p>Laws only state what will happen, theories axplain why something will happen.</p> Signup and view all the answers

Why do scientists develop a hypothesis before they conduct their experiments?

<p>It helps predict outcomes and design the experiment.</p> Signup and view all the answers

John shines a light on a piece of plastic. None of the light passes through the plastic. What does this tell us about the plastice

<p>it is opaque</p> Signup and view all the answers

A green house is made of a special plastic. The plastic allows some light through but everything inside appears blurry. What word below describes the green house?

<p>It is translucent</p> Signup and view all the answers

These waves must have a medium for the energy to transfer through.

<p>Mechanical waves</p> Signup and view all the answers

These are the only waves that can travel without passing through a medium.

<p>Electromagnetic waves</p> Signup and view all the answers

When we see a straw in a glass of water it may look broken or bent. Why does this occur?

<p>The light is refracted</p> Signup and view all the answers

John shines a white light on a box. When he does the box appears green. Why does this happen?

<p>The box reflects the green color</p> Signup and view all the answers

What type of friction would be used by an object sitting on a shelf?

<p>Static friction</p> Signup and view all the answers

What type of friction would be used by a sky diviver falling through the air?

<p>Fluid friction</p> Signup and view all the answers

In an experiment scientist test a hypothesis. They can only test one thing at a time. What do we call the one thing they are testing/manipulating?

<p>Independent variable</p> Signup and view all the answers

For scientists to get valid results they can only test one thing at a time. This means they have to keep everything else exactly the same/constant. What do we call all the things kept the same?

<p>Controlled variable</p> Signup and view all the answers

Which does NOT receive the independent variable during an experiment?

<p>Control group</p> Signup and view all the answers

What does the Law of Conservation of Energy state? (You MUST state all parts.)

<p>Energy is never created or destroyed. It can only be transfered to a new place or transformed into a different type.</p> Signup and view all the answers

Explain why sound cannot travel in a vacuum .

<p>Sound is a mechanical wave. It needs matter/medium to transfer energy.</p> Signup and view all the answers

  1. John wants to conduct an investigation to see if the angle light is reflected increases the temperature on the object it is reflected on. He has on mirror straight up. The second he changes to an 80 degree angle, another is placed at a 70 degree angle the last one is place at a 65 degree angle. He then shines a heat lamp on each and records the temperature on the object below after 5 minutes. What is the independent variable and what is the dependent variable?

<p>the independent variable is the angle of the light. The dependent variable is the temperature of the object.</p> Signup and view all the answers

List the steps of the scientific method in order. Omit the 7th step communication.

<ol> <li>Identify the problem/question.</li> <li>Background research</li> <li>Create a hypothesis.</li> <li>Experiment</li> <li>Analyze data</li> <li>Interpret data and make conclusion</li> </ol> Signup and view all the answers

How are speed and velocity alike? How are the 2 different.

<p>Speed and velocity both tell how fast an object moves. Velocity also includes the direction the object is traveling in.</p> Signup and view all the answers

Study Notes

Work and Energy

  • Gabrielle does 2000 J of work when she pulls a toy car 10 meters with a force of 200 N.
  • Jack does 150000 J of work when he drags a shopping bag for 1000 meters with a force of 150 N.
  • A 5 kg cat gains 100 J of gravitational potential energy (GPE) when lifted 2 meters into the air.
  • A 70 kg box gains 3500 J of GPE when lifted 5 meters into the air.
  • An angry bull with a mass of 700 kg has 35000 J of kinetic energy when running at 10 m/s.
  • A waddling armadillo with a mass of 6 kg has 45 J of kinetic energy when moving at 5 m/s.

Forces and Friction

  • Friction is a contact force that opposes motion between objects that are in contact.
  • Tension is a contact force.
  • Gravity is a non-contact force.
  • Air resistance is a contact force.
  • Magnetism is a non-contact force.

Science and Investigation

  • Observation involves using the 5 senses to learn more about something.
  • Inference involves forming an idea of why something happened in the past based on observations.
  • Prediction involves forming an idea of what will happen in the future based on observations.
  • Classification involves organizing or separating things by how they are alike or different.
  • Measurement involves finding the size, mass, volume, distance, weight, or temperature of anything.
  • Experimentation involves conducting controlled tests to determine if a hypothesis is correct.
  • Data analysis involves looking at the data and finding patterns.
  • Explanation involves using the information gained to try to explain or understand something.

Models and Waves

  • Models are used to study things that are too big, too small, too distant, or too complicated to study through direct observations.
  • Light can travel in different ways, including reflection, refraction, and diffraction.

Waves and Electromagnetic Spectrum

  • The electromagnetic spectrum includes different types of waves, including gamma rays, X-rays, ultraviolet light, visible light, infrared light, microwaves, and radio waves.
  • Visible light is located at position 5 on the electromagnetic spectrum.

Inertia and Energy

  • Inertia is an object's resistance to changes in motion.
  • The forces that work against inertia are friction, air resistance, and gravity.
  • The amount of inertia an object has is determined by its mass.
  • Kinetic energy is the energy of motion.
  • Potential energy is stored energy.

Scientific Method

  • The scientific method involves repeating an experiment several times to get the same results.
  • Repeating another scientist's experiment to see if the first results are valid is called replication.
  • Ensuring reliable results involves focusing on the controlled variables and the independent variable.
  • A scientific law describes a consistent pattern in nature.
  • A hypothesis is an educated guess that can be tested.
  • A scientific theory is a well-substantiated explanation for a set of phenomena.
  • Scientists develop a hypothesis before conducting experiments to guide their investigation.

Light and Optics

  • When light passes through a medium, it can be refracted, or bent.
  • Total internal reflection occurs when light hits a surface at a shallow angle and bounces back.
  • John shines a light on a piece of plastic, and none of the light passes through, indicating that the plastic is opaque.
  • A green house made of special plastic allows some light through, but everything inside appears blurry, indicating that the plastic is translucent.

Friction and Forces

  • Static friction is the force that prevents an object from moving when a force is applied.
  • Kinetic friction is the force that slows down an object that is already moving.
  • Friction is necessary for an object to stop or change direction.

Independent and Dependent Variables

  • The independent variable is the one thing being tested or manipulated in an experiment.
  • The dependent variable is the thing being measured or observed in response to the independent variable.
  • The controlled variables are the things kept the same to ensure a fair test.

Law of Conservation of Energy

  • The Law of Conservation of Energy states that energy cannot be created or destroyed, only converted from one form to another.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Description

Students will be assessed on all materials studied during quarters 3 and 4.

More Quizzes Like This

Work and Energy in Physics
10 questions

Work and Energy in Physics

FamedChrysoprase9763 avatar
FamedChrysoprase9763
Physics Chapter: Work and Energy
18 questions
Work and Energy in Physics
15 questions

Work and Energy in Physics

AccomplishedBixbite avatar
AccomplishedBixbite
Physics: Work and Energy
6 questions
Use Quizgecko on...
Browser
Browser