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Universe: The Origin and Evolution of the Universe Science Object
Science Object
Universe: The Origin and Evolution of the Universe
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 fifth of five Science Objects in the Universe SciPack. It provides understanding of how the universe formed, how it has changed over time, and how it continues to change today. The ‘big bang’ theory of universe formation is supported by recent...  [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 fifth of five Science Objects in the Universe SciPack. It provides understanding of how the universe formed, how it has changed over time, and how it continues to change today. The ‘big bang’ theory of universe formation is supported by recent observations of the motion of galaxies, as well as observations of the energy left over from the formation of the universe. This evidence suggests that the origin of the universe occurred approximately 13.6 billion years ago, during a point in time when the state of the universe was much hotter and more dense. The fact that light seen from almost all distant galaxies has longer wavelengths than comparable light here on earth provides evidence that the whole universe has been expanding ever since the big bang (and continues to expand today).
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Energy: Thermal Energy, Heat, and Temperature Science Object
Science Object
Energy: Thermal Energy, Heat, and Temperature
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 four Science Objects in the Energy SciPack. It provides a conceptual and real-world understanding of the relationship between thermal energy, heat, and temperature. The thermal energy of a material consists of the disordered motion of its atoms or molecules. Thermal...  [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 third of four Science Objects in the Energy SciPack. It provides a conceptual and real-world understanding of the relationship between thermal energy, heat, and temperature. The thermal energy of a material consists of the disordered motion of its atoms or molecules. Thermal energy can be transferred through materials or from one material to another by conduction (the collisions of atoms), or across space by radiation. If the material is fluid, convection currents aid the transfer of thermal energy (convection). When thermal energy is transferred it is called heat. Temperature is a measure of the average kinetic energy of atoms and molecules in a material.
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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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Earth's Changing Surface: Changing Earth From Within Science Object
Science Object
Earth's Changing Surface: Changing Earth From Within
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 Earth’s Changing Surface SciPack. It explores the forces within Earth that cause continual changes on its surface. Heat flow from the decay of radioactive isotopes and the gravitational energy from Earth’s original formation produce movement...  [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 Earth’s Changing Surface SciPack. It explores the forces within Earth that cause continual changes on its surface. Heat flow from the decay of radioactive isotopes and the gravitational energy from Earth’s original formation produce movement of the tectonic plates, which cause earthquakes and volcanic eruptions and create mountains and ocean basins.
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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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Earth's Changing Surface: Humans as Agents of Change Science Object
Science Object
Earth's Changing Surface: Humans as Agents of Change
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 Earth’s Changing Surface SciPack. It explores the natural and human influences on landscape evolution. These influences sometimes accelerate or slow down the process of landscape evolution. Human activities such as deforestation, accelerated...  [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 Earth’s Changing Surface SciPack. It explores the natural and human influences on landscape evolution. These influences sometimes accelerate or slow down the process of landscape evolution. Human activities such as deforestation, accelerated global warming, and mining have impacted Earth’s changing surface. These activities are not new processes but often increase or accentuate the natural processes. When natural processes are accelerated, humans are often affected by the changes in their environment.
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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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