Physics Semester 1 Exam Review
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Questions and Answers

What is one way to define electric force?

  • By counting the number of electric charges
  • By measuring the distance between two magnets
  • By testing different water temperatures
  • By observing how a charged balloon causes paper to move (correct)

The strength of a magnetic force increases with the distance between objects.

False (B)

What factors affect the strength of an electric force?

The amount of charge and the distance between the objects.

The study of the interaction between electricity and magnetism is known as __________.

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

Match the following concepts with their explanations:

<p>Electric Force = The force between charged objects Magnetic Field = The area around a magnet where magnetic forces can be detected Electromagnetism = The interaction between electricity and magnetism Potential Energy = The energy stored in an object due to its position</p> Signup and view all the answers

What type of wave is characterized by particle motion being perpendicular to the direction of wave propagation?

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

The amplitude of a wave is directly related to its frequency.

<p>False (B)</p> Signup and view all the answers

Name one interaction that can occur between waves.

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

In a _______ wave, particles move parallel to the direction of the wave's propagation.

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

Match the wave properties with their definitions:

<p>Amplitude = Maximum displacement from the rest position Wavelength = Distance between consecutive crests Frequency = Number of cycles per unit time Speed = Distance traveled per unit time</p> Signup and view all the answers

What is the main objective of studying wave properties in this topic?

<p>To describe how waves interact with materials (D)</p> Signup and view all the answers

Waves can reflect, absorb, or transmit when they interact with different materials.

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

What is one mathematical representation used to describe the relationship between amplitude and energy in waves?

<p>Energy is proportional to the square of the amplitude.</p> Signup and view all the answers

Which of the following terms describes the basic unit that defines the strength and direction of an electric force?

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

Static electricity is the same as electric current.

<p>False (B)</p> Signup and view all the answers

What is the phenomenon called when a wave bounces back after striking a barrier?

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

A __________ is a disturbance that travels through a medium, transferring energy from one point to another.

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

Match the following vocabulary terms with their definitions:

<p>Electron = A negatively charged particle found in atoms Magnetism = The force exerted by magnets when they attract or repel each other Frequency = The number of waves that pass a point per unit time Resonance = The amplification of a wave due to matching frequencies</p> Signup and view all the answers

What can cause changes in the magnetic force between two magnets?

<p>Both A and C (D)</p> Signup and view all the answers

The amplitude of a wave is related to the height of its peaks.

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

How do waves interact with each other?

<p>Waves can interfere, resulting in constructive or destructive interference.</p> Signup and view all the answers

Flashcards

Wave

A disturbance that travels through a medium or space, transferring energy but not matter.

Amplitude

The maximum displacement of a wave from its resting position.

Wavelength

The distance between two consecutive crests or troughs of a wave.

Frequency

The number of waves passing a point in one second.

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Transverse Wave

A wave where the particles of the medium vibrate perpendicular to the direction of wave propagation.

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Longitudinal Wave

A wave where the particles of the medium vibrate parallel to the direction of wave propagation.

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Refraction

The bending of waves as they pass from one medium to another.

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Reflection

The bouncing back of a wave when it hits a boundary.

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Electric Force

The force that exists between charged objects. Like charges repel, and opposite charges attract.

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Magnetic Force

The force that exists between magnets or magnetic materials. Magnets have a north and south pole, and like poles repel, while opposite poles attract.

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Electromagnetism

The interaction between electric and magnetic fields. A moving electric charge generates a magnetic field, and a changing magnetic field can induce an electric current.

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Factors Affecting Magnetic Strength

The strength of a magnetic field is affected by factors like the strength of the magnet, the distance from the magnet, and the material surrounding the magnet.

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Magnetic Attraction

The ability of a magnet to attract iron, nickel, or cobalt. This property is due to the magnetic field created by the magnet, which interacts with the magnetic fields of these materials.

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Electric Field

A region around a charged object where another charged object would experience a force.

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Electric Current

The flow of electric charge through a material.

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Conductor

A material that allows electric charge to flow easily through it.

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Static Electricity

A stationary electric charge, often caused by a buildup of electrons on a surface.

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Insulator

A material that resists the flow of electric charge.

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Magnetic Field

A region around a magnet where another magnet or magnetic material would experience a force.

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Magnetism

The ability of a material to attract or repel other magnetic materials.

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Study Notes

Semester 1 Exam Topics

  • Exam covers Topics 8 (Waves and Electromagnetic Radiations), 9 (Electricity and Magnetism), and 1 (The Cell System)
  • Attached document lists topics, not specific question types
  • Practice questions are attached to aid understanding
  • Savvas videos and Google Classroom resources (edpuzzle, quizizz, kahoot) supplement learning

Exam Review Week

  • January 12th to 16th, 2025

Exam Information - Topic 8: Waves

  • Lesson 1: Wave Properties
    • Objectives: Describe simple wave models, use mathematical representations to relate wave amplitude to energy, differentiate between transverse and longitudinal waves
  • Lesson 2: Wave Interactions
    • Objectives: Model wave reflection, absorption, and transmission; describe wave interactions

Exam Information - Topic 9: Electricity and Magnetism

  • Lesson 1: Electric Force
    • Objectives: Define electric force, determine factors affecting electric force strength, conduct simulations in Savvas
  • Lesson 2: Magnetic Force
    • Objectives: Describe how magnetic force and potential energy change with distance, detect and describe magnetic fields
  • Lesson 3: Electromagnetic Force
    • Objectives: Define electromagnetism, describe the effect of electricity on magnetism

Exam Information - Topic 1: The Cell System

  • Lesson 1: Structure and Function of Cells
    • Objectives: Develop models to describe cell function and how different parts contribute to function; determine what evidence there is that all living things are made of cells; describe how cells determine the structure of living things.

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Related Documents

7th Grade Sem 1 Exam Study Guide 2024-2025 PDF

Description

Prepare for your Semester 1 Physics Exam with topics including Waves, Electricity, and Magnetism. This review covers wave properties, interactions, and electric force concepts. Use provided practice questions and resources for effective study as you get ready for your exam from January 12th to 16th, 2025.

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