What does a student learn in StateTennessee,GradeGrade 8,SubjectScience?

Students study what matter is made of and how different substances interact, change, and combine at the atomic level.

Students study why objects speed up, slow down, or change direction. The focus is on the invisible pushes and pulls between objects, from gravity holding a ball to Earth to magnets snapping together.

Students study how waves carry energy and information, from sound and light to radio signals. They learn how devices like phones, radios, and cameras use wave properties to send and receive information across distances.

Students study how life on Earth has changed over time, looking at fossils, inherited traits, and natural selection to explain why species look different today than they did millions of years ago.

Students study how Earth fits into the solar system and beyond, including why seasons change, how the Moon drives tides, and what patterns astronomers use to map stars and galaxies.

Students study how Earth's oceans, atmosphere, land, and living things interact. They trace how energy and matter move through these systems to explain weather, erosion, and other everyday changes on Earth's surface.

Students study how humans use natural resources and how those choices affect the planet. They look at what happens when we burn fuels, build on land, or pull water from the ground.

Students identify a real problem, research it, and design a solution that meets specific requirements while working within practical constraints like cost or available materials.

Engineering connects science to the real world. Students explore how scientific discoveries lead to new technologies, and how those technologies shape what engineers can build next.

Students learn that every atom has a positively charged center called a nucleus, with negatively charged electrons surrounding it. Models like diagrams help show how those two parts balance each other out.

Students learn how stars fuse small atoms into heavier ones, releasing light and energy in the process. That nuclear fusion is what makes stars shine and is responsible for building most of the atoms that exist in the universe.

Students test how the pull between magnets or the push between electric charges changes when the objects move closer together or farther apart, or when stronger magnets and larger charges are used.

Students test what happens when they change the number of wire coils or the battery strength in an electromagnet, generator, or motor. The goal is to figure out what makes the electric current or magnetic force stronger or weaker.

Gravity pulls objects toward each other, and the strength of that pull depends on how massive the objects are and how far apart they sit. Students build an argument, using real evidence, explaining why this holds true across solar systems and galaxies.

The same moving object can look still, slow, or fast depending on where the observer stands. Students explain how position, motion, and the effect of forces all depend on the observer's point of view.

Students design and run an experiment to show that a heavier object needs more force to change how fast or which way it moves. The bigger the push or pull, the more the motion changes.

When you push on something, it pushes back just as hard. Students learn why a swimmer moves forward by pushing water backward, or why a ball hitting a wall bounces back with the same force it arrived with.

Students draw or build models of waves to show how the same wave can be tall or short, spread out or bunched together, and slow or fast. These four properties describe how a wave behaves and how much energy it carries.

Students compare how light waves and sound waves behave differently when they hit a surface, pass through different materials, or travel through empty space. They explain why light bends in water or bounces off a mirror when sound cannot do the same.

Students compare digital and analog signals, then argue (with evidence) why digital signals are less likely to garble information when sent across a communication system.

Fossils tell the story of life on Earth. Students read evidence from rock layers and the geologic timescale to find patterns in how living things appeared, changed, and disappeared over millions of years.

Students compare bones, body parts, and DNA from fossils and living species to explain how those organisms are related and how life has changed over time.

Some animals in a group are born with traits that help them survive better than others. Students study how those helpful traits get passed on, making them more common in the population over time.

Students explain why some traits help a species survive when conditions change. Natural selection is the process: individuals with useful traits live longer, reproduce more, and pass those traits on.

Artificial selection is when humans deliberately breed plants or animals to bring out useful traits. Students study modern tools, like genetic testing and gene editing, that make this faster and more precise than traditional breeding alone.

Students study how scientists know the universe started with a rapid expansion called the Big Bang. They look at how galaxies are moving apart, why hydrogen and helium are so common, and what the faint glow of ancient energy left over from that event tells us.

Maps, fossils, and climate records show that sudden or slow changes to the land, like volcanic eruptions or shifting coastlines, can wipe out entire species. Students study that data to explain why those population crashes happen.

Seismograph data (the wiggles recorded during earthquakes) reveals what lies beneath Earth's surface. Students use that data to map the planet's layers and explain how heat from deep inside Earth drives volcanic activity and other geological processes.

Heat rising from deep inside the Earth keeps rock in the upper mantle slowly moving. That slow movement shifts the plates above, pushing them apart, pulling them together, and building the features we see at plate boundaries.

Students use fossil locations and ocean floor maps to build a scientific explanation for how Earth's plates have slowly shifted over time, connecting patterns in the evidence to features like mountains, volcanoes, and deep-sea trenches.

Students map where earthquakes and volcanoes have happened, look for patterns near plate boundaries and hotspots, and use those patterns to predict where future events are most likely to occur.

Students build or use a model with an electromagnet to test whether a design actually solves a problem. They check their solution against specific requirements, like weight limits or strength targets, to see what works and what needs fixing.

Tools like telescopes and seismographs collect data scientists could never gather by hand. Students research how those tools shaped what we know about Earth and space, and how those discoveries led to better tools in return.