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Nature of Light: Characteristics of Light Science Object
Science Object
Nature of Light: Characteristics of Light
Grade Level: Elementary School, Middle School
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the first of four Science Objects in the Nature of Light SciPack. It establishes the concept that electromagnetic waves can interact with materials in different ways. For example, they can reflect off a material’s surface. We can see an object when light waves that are emitted or...  [view full summary]
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the first of four Science Objects in the Nature of Light SciPack. It establishes the concept that electromagnetic waves can interact with materials in different ways. For example, they can reflect off a material’s surface. We can see an object when light waves that are emitted or reflected by the object enter the eye. Electromagnetic waves can also pass through materials, sometimes slowing down or changing direction as a result of entering and leaving the material. Or, electromagnetic waves may be absorbed or scattered within the material. Electromagnetic waves and other waves diffract around corners, and interfere with one another in predictable ways.
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Chemical Reactions: Matter and Energy in Reactions Science Object
Science Object
Chemical Reactions: Matter and Energy in Reactions
Grade Level: Elementary School, Middle School
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the final of four Science Objects in the Chemical Reactions SciPack. It explains how different configurations of atoms and molecules are associated with different energy levels. Some changes of configuration among atoms and molecules require a net input of energy whereas others cause...  [view full summary]
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the final of four Science Objects in the Chemical Reactions SciPack. It explains how different configurations of atoms and molecules are associated with different energy levels. Some changes of configuration among atoms and molecules require a net input of energy whereas others cause a net release. As a result, chemical reactions may release or consume energy. Some reactions such as the burning of fossil fuels release large amounts of energy by losing heat and by emitting light. Energy from light and other electromagnetic radiation can initiate many chemical reactions such as photosynthesis and the evolution of urban smog. The behavior of atoms in chemical reactions demonstrates the conservation of matter: When the number of atoms in a closed system stays the same, their total mass remains constant no matter how they are rearranged.
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Explaining Matter with Elements, Atoms, and Molecules: Classifying the Elements Science Object
Science Object
Explaining Matter with Elements, Atoms, and Molecules: Classifying the Elements
Grade Level: Elementary School, High School, Middle School
Science Objects are two hour, on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the second of three Science Objects in the Explaining Matter with Elements, Atoms, and Molecules SciPack. It investigates how the classification of elements into families of elements with similar properties assisted with the development of the periodic table of elements.
Science Objects are two hour, on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the second of three Science Objects in the Explaining Matter with Elements, Atoms, and Molecules SciPack. It investigates how the classification of elements into families of elements with similar properties assisted with the development of the periodic table of elements.
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Explaining Matter with Elements, Atoms, and Molecules: Evidence for Atoms and Molecules Science Object
Science Object
Explaining Matter with Elements, Atoms, and Molecules: Evidence for Atoms and Molecules
Grade Level: Elementary School, High School, Middle School
Science Objects are two hour, on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the third of three Science Objects in the Explaining Matter with Elements, Atoms, and Molecules SciPack. It explores the evidence for atoms and molecules, and looks at the way atoms and molecules are arranged and behave in different types of matter (solids, liquids, and gases).
Science Objects are two hour, on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the third of three Science Objects in the Explaining Matter with Elements, Atoms, and Molecules SciPack. It explores the evidence for atoms and molecules, and looks at the way atoms and molecules are arranged and behave in different types of matter (solids, liquids, and gases).
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Gravity and Orbits: Orbits Science Object
Science Object
Gravity and Orbits: Orbits
Grade Level: Elementary School, High School, Middle School
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object, co-developed between NASA and NSTA, is the third of three Science Objects in the Gravity and Orbits SciPack. It provides an understanding of how gravitational forces influence the motion of an object in orbit. When a force acts toward a single center, an object’s forward motion and...  [view full summary]
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object, co-developed between NASA and NSTA, is the third of three Science Objects in the Gravity and Orbits SciPack. It provides an understanding of how gravitational forces influence the motion of an object in orbit. When a force acts toward a single center, an object’s forward motion and its motion toward that center can combine to create a curved path around the center. Gravity governs the motion of all objects in the solar system. The Sun’s gravitational pull holds the Earth and other planets in their orbits, just as the planets’ gravitational pull keeps their moons in orbit around them.
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Earth's Changing Surface: Sculpting the Landscape Science Object
Science Object
Earth's Changing Surface: Sculpting the Landscape
Grade Level: Elementary School, Middle School
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the second of three Science Objects in the Earth’s Changing Surface SciPack. It explores the landforms we see on Earth today and the processes that create these landforms. Landforms are the result of a combination of constructive and destructive forces. The Earth processes we see...  [view full summary]
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the second of three Science Objects in the Earth’s Changing Surface SciPack. It explores the landforms we see on Earth today and the processes that create these landforms. Landforms are the result of a combination of constructive and destructive forces. The Earth processes we see today, including erosion and the movement of lithospheric plates, are similar to those that occurred in the past. Some changes in Earth’s surface are abrupt such as earthquakes and volcanic eruptions. Other changes shaped in part by the motion of water and wind on weathered rock act over very long times to level mountain ranges and through sedimentation create new forms elsewhere.
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Electric and Magnetic Forces: Electric Charges Science Object
Science Object
Electric and Magnetic Forces: Electric Charges
Grade Level: Elementary School, Middle School
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the first of three Science Objects in the Electric and Magnetic Forces SciPack. It explores electric charges and electric force. There are two kinds of charges—positive and negative. The electric force is a universal force that exists between any two charged objects. Like charges...  [view full summary]
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the first of three Science Objects in the Electric and Magnetic Forces SciPack. It explores electric charges and electric force. There are two kinds of charges—positive and negative. The electric force is a universal force that exists between any two charged objects. Like charges repel one another, and opposite charges attract. The strength of the force is directly proportional to the amount of charge, and inversely proportional to the square of the distance between them. On an atomic scale, the nucleus and electrons are the basic constituents of all atoms and create the electric forces that hold atoms and molecules together. On a larger scale, these forces hold solid and liquid materials together and act between objects when they are in contact (for example, friction or the impact of a bat on a ball). In materials, there are almost exactly equal proportions of positive and negative charges, making the materials as a whole electrically neutral. An imbalance in these opposite charges will produce phenomena that range from electric sparks and clinging clothes to lightning.
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Electric and Magnetic Forces: Electrostatics and Current Electricity Science Object
Science Object
Electric and Magnetic Forces: Electrostatics and Current Electricity
Grade Level: Elementary School, Middle School
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the second of three Science Objects in the Electric and Magnetic Forces SciPack. It explores the ability of electrons to flow, producing an electric current. Negative charges, being associated with electrons on the outer edges of atoms, are far more mobile in materials than...  [view full summary]
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the second of three Science Objects in the Electric and Magnetic Forces SciPack. It explores the ability of electrons to flow, producing an electric current. Negative charges, being associated with electrons on the outer edges of atoms, are far more mobile in materials than positive charges located in the nucleus at the center of an atom. In some materials, such as metals, electrons flow easily, whereas in insulating materials such as glass they can hardly flow at all. At very low temperatures, some materials become superconductors and offer no resistance to the flow of current. In between these extremes, semi-conducting materials differ greatly in how well they conduct, depending on their exact composition. Electric currents occur when charges move through conductors. Batteries and other devices store electrical energy by separating and concentrating charges. Electrical circuits provide a means of transferring electrical energy into other forms of energy such as heat, light, and sound.
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Electric and Magnetic Forces: Electromagnetism Science Object
Science Object
Electric and Magnetic Forces: Electromagnetism
Grade Level: Elementary School, Middle School
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the last of three Science Objects in the Electric and Magnetic Forces SciPack. It explores magnets, magnetic forces, and the relationship between magnetic and electric forces. Magnetic and electric forces are closely related and can be thought of as different aspects of a single...  [view full summary]
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the last of three Science Objects in the Electric and Magnetic Forces SciPack. It explores magnets, magnetic forces, and the relationship between magnetic and electric forces. Magnetic and electric forces are closely related and can be thought of as different aspects of a single electromagnetic force. Both electric and magnetic forces are thought of as acting by means of fields: an electric charge has an electric field in the space around it that affects other charges, and a magnet has a magnetic field around it that affects other magnets. Moving electric charges produce magnetic fields and are affected by magnetic fields. More generally, a changing electric field induces a magnetic field, and vice versa. This interaction is the basis of many natural phenomena. For example, electric currents circulating in the earth's core give the earth an extensive magnetic field, which we detect from the orientation of our compass needles. The interplay of electric and magnetic fields is also the basis for electric motors, generators, and many other modern technologies.
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Energy: Different Kinds of Energy Science Object
Science Object
Energy: Different Kinds of Energy
Grade Level: Elementary School, High School, Middle School
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the first of four Science Objects in the Energy SciPack. It provides a conceptual and real-world understanding of the different types of energy. Energy can appear in many different forms, however all forms of energy can be broadly classified as one or a combination of two kinds:...  [view full summary]
Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object is the first of four Science Objects in the Energy SciPack. It provides a conceptual and real-world understanding of the different types of energy. Energy can appear in many different forms, however all forms of energy can be broadly classified as one or a combination of two kinds: kinetic energy, which is the energy of motion; and potential energy, which depends on the relative position or shape of an object. Other kinds of energy include gravitational energy (the separation of mutually attracting masses), thermal energy (the disorderly motion of atoms or molecules), and chemical energy (the arrangement of atoms).
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