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Science Courses Updates in July 2021

Updated

We are excited to share that we've made significant enhancements to our Science domain. Some of our formerly science “beta” courses are now ready to go and we have added new content to the following courses:

That said, it is worth noting that, for high school biology, high school physics, and AP physics 1, we completely replaced the old content for the new one. If you had progress saved in the older versions of these courses, however, it doesn't mean you lost access to your work. You can still access the old versions of these courses through the direct links:

We make these kinds of updates in service of providing free, world-class education, and we truly appreciate your understanding. You can see exactly what content items we’ve added in the new courses below. Happy learning! 

High school biology 

Articles

Humans and biodiversity

Exercises

Understand: cell specialization

Understand: genes, proteins, and cells

Apply: organization of multicellular organisms

Understand: organization of multicellular organisms

Understand: cell division and organism growth

Apply: cell division and organism growth

Understand: feedback in living systems

Apply: feedback in living systems

Understand: photosynthesis

Apply: formation of biomolecules

Understand: formation of biomolecules

Understand: cellular respiration

Understand: gene expression and regulation

Understand: sources of genetic variation

Apply: sources of genetic variation

Understand: genes, traits, and the environment

Apply: genes, traits, and the environment

Apply: evidence of common ancestry

Understand: evidence of common ancestry

Understand: natural selection

Apply: natural selection

Understand: natural selection and evolution

Understand: evolution of group behavior

Apply: natural selection and adaptation

Understand: natural selection and adaptation

Apply: adaption and environmental change

Understand: species and the environment

Understand: extinction

Understand: biodiversity

Understand: humans and biodiversity

Understand: sustainability and natural resource management

Apply: science, technology, and the environment

Topic

Cell specialization

Genes, proteins, and cells

Organization of multicellular organisms

Cell division and organism growth

Feedback in living systems

Photosynthesis

Formation of biomolecules

Cellular respiration

Gene expression and regulation

Sources of genetic variation

Genes, traits, and the environment

Evidence of common ancestry

Natural selection

Natural selection and evolution

Evolution of group behavior

Natural selection and adaptation

Adaptation and environmental change

Species and the environment

Extinction

Biodiversity

Humans and biodiversity

Sustainability and natural resource management

Science, technology, and the environment

Videos

Cell specialization

Genes, proteins, and cells

Organization of multicellular organisms

Cell division and organism growth

Feedback in living systems

Photosynthesis

Formation of biomolecules

Cellular respiration

Gene expression and regulation

Sources of genetic variation

Mendelian inheritance and Punnett squares

Dihybrid cross and the law of independent assortment

Genes, traits, and the environment

Evidence for evolution

Understanding and building phylogenetic trees

Natural selection and the owl butterfly

Natural selection and evolution

Evolution of group behavior

Natural selection and adaptation

Adaptation and environmental change

Species and the environment

Extinction

Biodiversity

Ecosystem services

How does climate change affect biodiversity?

Conservation and the race to save biodiversity

Science, technology, and the environment

 

High school physics

Articles

Newton's second law review

Exercises

Understand: force, mass, and acceleration

Understand: energy in systems

Understand: mechanical waves

Understand: electromagnetic waves

Understand: wave interference

Apply: wave interference

Understand: wave particle duality

Understand: electromagnetic radiation and matter

Apply: electromagnetic radiation and matter

Understand: information in waves

Understand: technology and waves

Apply: technology and waves

Apply: force, mass, and acceleration

Understand: introduction to energy

Understand: forms of energy

Understand: energy and fields

Understand: energy at the microscopic level

Apply: energy at the microscopic scale

Understand: calculating energy

Apply: energy in systems

Apply: predictions using energy

Understand: thermodynamics

Apply: thermodynamics

Understand: emission of electromagnetic radiation

Understand: predictions using energy

Topic

Force, mass, and acceleration

What is energy?

Forms of energy

Energy and fields

Energy at the microscopic scale

Calculating energy

Energy in systems

Predictions using energy

Thermodynamics

Waves

Wave interference

Wave particle duality

Electromagnetic radiation and matter

Emission of electromagnetic radiation

Information in waves

Technology and waves

Videos

Newton's second law of motion

Introduction to energy

LOL diagrams

Specific heat and latent heat of fusion and vaporization

Wave interference

Introduction to light

What is energy?

Law of energy conservation

Gravitational potential energy at large distances

Energy and fields

Potential energy and position

Energy at the microscopic scale

Calculating kinetic energy

Calculating gravitational potential energy

Wave properties

Electromagnetic radiation emission

 

AP Environmental sciences 

Exercises

Species growth

Population growth

Human populations

Plate tectonics

Earth's soil

Earth's air and water

Earth's seasons

Earth's climate

Intro to land and water use

Effects of land and water use I

Effect of land and water use II

Intro to sustainable practices

Types of sustainable practices

Intro to energy resources and consumption

Fuel types and uses I

Fuel types and uses II

Energy conservation

Air pollution

Reducing air pollution

Other atmospheric pollution

Sources of pollution

Types of aquatic and terrestrial pollution

Waste disposal, reduction, and treatment

Pollution and health

Pathogens

Ozone

Greenhouse effect

Climate change

Human impact on species

Topics

Species growth

Population growth

Human populations

Plate tectonics

Earth's soil

Earth's air and water

Earth's seasons

Earth's climate

Intro to land and water use

Effects of land and water use I

Effect of land and water use II

Intro to sustainable practices

Types of sustainable practices

Intro to energy resources and consumption

Fuel types and uses I

Fuel types and uses II

Energy conservation

Air pollution

Reducing air pollution

Other atmospheric pollution

Sources of pollution

Types of aquatic and terrestrial pollution

Waste disposal, reduction, and treatment

Pollution and health

Pathogens

Ozone

Greenhouse effect

Climate change

Human impact on species

Videos

Introduced species and biodiversity

K selected and r selected population growth strategies

Exponential and logistic growth in populations

Population regulation

Human population dynamics

Rule of 70 to approximate population doubling time

Demographic transition model

Plate tectonics: Geological features of convergent plate boundaries

Plate tectonics: Geological features of divergent plate boundaries

Global wind patterns

Are southern hemisphere seasons more severe?

El Niño and La Niña

Tragedy of the commons

Impacts of Agricultural Practices

Impacts of Urbanization

Introduction to Sustainability

Integrated Pest Management

Nonrenewable Energy Resources

Nuclear Power Generation

Solar Energy

Energy Conservation Methods

Indoor Air Pollutants

Reduction of Air Pollutants

Acid Rain

Human Impacts on aquatic environments

Eutrophication and dead zones

Solid waste disposal

Pathogens and Infectious diseases

Stratospheric Ozone Depletion

The greenhouse effect

The Atmosphere and Climate

Ocean acidification

Human activities that threaten biodiversity

Pollution and human health

Soil texture triangle

 

AP Physics 1 

Exercises

Newton's third law and free-body diagrams

Newton's second law

Applications of Newton's second law

Vector fields

Fundamental forces

Gravitational forces

Gravitational fields and acceleration on different planets

Centripetal acceleration and centripetal force

Free-body diagrams for objects in uniform circular motion

Applications of circular motion and gravitation

Work and mechanical energy

Conservation of energy

Momentum and impulse

Representations of changes in momentum

Conservation of linear momentum

Period of simple harmonic oscillators

Energy of a simple harmonic oscillator

Rotational kinetmatics

Torque and angular acceleration

Angular momentum and torque

Conservation of angular momentum

Free-body diagrams for objects in uniform circular motion

Topics

Newton's third law and free body-diagrams

Newton's second law

Applications of Newton's second law

Vector fields

Fundamental forces

Gravitational forces

Gravitational field/acceleration due to gravity on different planets

Centripetal acceleration and centripetal force

Free-body diagrams for objects in uniform circular motion

Applications of circular motion and gravitation

Work and mechanical energy

Conservation of energy

Momentum and impluse

Representation of changes in momentum

Conservation of linear momentum

Period of simple harmonic oscillators

Energy of a simple harmonic oscillator

Rotational kinematics

Torque and angular acceleration

Angular momentum and torque

Conservation of angular momentum

Conservation of energy

Videos

Newton's third law of motion

More on Newton's third law

Breaking down forces for free body diagrams

Newton's second law of motion

Inclined plane force components

More on newton's second law

Ice accelerating downhill

Visualizing vectors in 2 dimensions

Four fundamental forces

Introduction to gravity

Acceleration due to gravity at the space station

Viewing g as the value of Earth's gravitational field near the surface

Inertial Mass vs. Gravitational Mass

Change in centripetal acceleration from change in linear velocity and radius: Worked examples

Identifying centripetal force for ball on string

Identifying centripetal force for cars and satellites

Identifying force vectors for pendulum: Worked example

Space station speed in orbit

Impact of mass on orbital speed

Work and the work-energy principle

Conservative forces

Law of conservation of energy

Introduction to momentum

Force vs. time graphs

Elastic and inelastic collisions

Changes in momentum worked examples

Bouncing fruit example

Ice skater throws a ball

Definition of amplitude and period

Period dependence for mass on spring

Equation for simple harmonic oscillators

Period of a pendulum

Energy graphs for simple harmonic motion

Angular motion variables

Relating angular and regular motion variables

Rotating kinematic formulas

Torque basics

Finding torque for angles forces

Rotational version of Newton's second law

Angular momentum

Angular momentum of an extended object

Conservation of angular momentum

Ball hits rod angular momentum example

Change in centripetal acceleration from change in linear velocity and radius: Worked examples

Work-Energy Principle Example

Introduction to momentum