Grade 7 Science Worksheets

Learning Objectives

• Understand the conventions of technical communication including drawings, schematics, and documentation.
• Identify and interpret standardized symbols, units, and labels used in engineering diagrams.
• Explain the importance of clarity, scale, and unambiguous dimensioning in technical drawings.+ Show more

Learning Objectives

• Explain how biodiversity contributes to ecosystem stability
• Describe how overlapping ecological roles can buffer ecosystems against disturbances
• Identify ways habitat loss and invasive species can reduce biodiversity and increase vulnerability+ Show more

Learning Objectives

• Distinguish biotic factors from abiotic factors in an ecosystem
• Explain how abiotic conditions influence which organisms can survive
• Describe how changes in abiotic factors can affect biotic interactions and population sizes+ Show more

Learning Objectives

• Explain how natural selection works using the ideas of heritable variation and differential survival and reproduction
• Describe how natural selection changes allele frequencies over many generations
• Use real-world examples (such as antibiotic resistance) to illustrate natural selection+ Show more

Learning Objectives

• Explain how latitude affects the angle of sunlight and long-term temperature patterns
• Describe how elevation can lower temperature and influence precipitation
• Connect distance from water and ocean currents to changes in temperature and rainfall+ Show more

Learning Objectives

• Explain what air masses are and how their source regions affect temperature and moisture.
• Describe how fronts form when different air masses meet.
• Compare the weather changes commonly associated with warm fronts and cold fronts.

Learning Objectives

• Analyze integrated systems by understanding forces, machine functions, and structural evaluation.
• Compare alternative design solutions based on criteria such as mechanical advantage, material choice, and safety.
• Synthesize motion data, mechanical calculations, and structural assessments for regional applications.+ Show more

Learning Objectives

• Define population variation and trait frequency using measurable examples
• Explain how inherited differences and recombination contribute to differences among individuals
• Describe how environmental pressures can change trait frequencies across generations

Learning Objectives

• Explain how igneous, sedimentary, and metamorphic rocks form in the rock cycle
• Describe how weathering, compaction, cementation, heat, and pressure change Earth materials
• Connect surface processes and subsurface processes to show how rocks transform over geologic time

Learning Objectives

• Explain how Earth’s water, land, and air resources are limited and not evenly available.
• Describe how natural processes (such as precipitation, drought, and flooding) affect resource availability.
• Analyze how human use and ecosystem capacity influence stress on shared resources.

Learning Objectives

• Explain how waves transfer energy without permanently moving matter
• Distinguish transverse waves from longitudinal waves using particle motion
• Identify how amplitude and wavelength relate to energy and spacing in a wave pattern+ Show more

Learning Objectives

• Explain how food molecules are broken down and rearranged into molecules needed for growth and repair.
• Describe how chemical energy in food becomes usable energy for life processes.
• Use scientific vocabulary (molecules, energy, chemical energy, growth, repair) to answer questions about digestion and body changes over time.

Learning Objectives

• Explain how scientific evidence supports a claim by connecting observations, data, and reasoning in a clear chain.
• Identify whether an argument uses specific evidence (data values, graph features, or direct observations) rather than unsupported statements.
• Revise an evidence argument to address limitations and avoid incorrect cause-and-effect claims.

Learning Objectives

• Explain how models help scientists make predictions from observations
• Differentiate physical, diagrammatic, and computational models and give an example of each
• Use a diagram of lunar phases to predict what the Moon will look like from Earth+ Show more

Learning Objectives

• Explain how atoms move through an ecosystem via processes like photosynthesis, feeding, respiration, and decomposition.
• Describe how decomposers return nutrients to soil and water and how this supports new plant growth.
• Distinguish matter cycling from energy flow in ecosystems, emphasizing that energy moves one direction from the Sun.

Learning Objectives

• Explain how matter cycles through ecosystems using carbon, nitrogen, and phosphorus examples.
• Describe the key processes that move nutrients between air, living things, and soil (photosynthesis, respiration, decomposition, and bacterial transformations).
• Analyze how nutrient availability can limit plant growth and affect ecosystem productivity.

Learning Objectives

• Explain how plate tectonics can cause rapid geologic hazards such as earthquakes and volcanic eruptions
• Describe how weathering, erosion, and deposition gradually reshape Earth’s surface
• Use geologic evidence (fault features, lava flows, and ash or sediment layers) to connect past processes to present landforms

Learning Objectives

• Interpret distance–time graphs to describe types of motion, including uniform motion, acceleration, and rest.
• Understand velocity–time graphs and relate slopes to speed and area under curves to displacement.
• Compare different graphs qualitatively and connect graphical patterns to real-world motion scenarios.+ Show more

Learning Objectives

• Explain how the atmosphere, hydrosphere, geosphere, and biosphere interact as Earth’s systems
• Describe how matter and energy move between spheres through processes like evaporation, precipitation, weathering, and transpiration
• Predict how changes in one sphere can cause effects in other spheres using cause-and-effect reasoning+ Show more

Learning Objectives

• Understand the principles of mechanical energy conservation.
• Describe energy transfer processes in pendulums and springs.
• Identify observable signs of energy loss to nonmechanical forms.+ Show more

Learning Objectives

• Describe the hierarchical levels of biological organization from individuals to the biosphere.
• Identify roles of producers, consumers, and decomposers in ecosystems.
• Explain how energy flows through trophic levels and affects ecosystem stability.+ Show more

Learning Objectives

• Understand and explain Newton's three laws of motion through real-world examples.
• Identify situations where inertia, acceleration, and action–reaction pairs occur in everyday life.
• Relate algebraic proportion ideas to force and mass to interpret cause-and-effect relationships.+ Show more

Learning Objectives

• Explain recoil and thrust using Newton’s third law (action–reaction force pairs).
• Identify the correct force pair and the opposite directions of forces in a two-object interaction.
• Relate equal-and-opposite forces to different accelerations using mass.

Learning Objectives

• Understand the key indicators of physical changes in substances.
• Identify examples of physical changes in real-world contexts.
• Differentiate between physical and chemical changes based on observable signs.+ Show more

Learning Objectives

• Understand the concept of trophic efficiency and energy transfer in ecosystems.
• Explain why energy diminishes at higher trophic levels.
• Identify the visual representation of energy flow in food chains.+ Show more

Learning Objectives

• Understand the components of evidence-based arguments including claims, evidence, and reasoning.
• Critically analyze and construct logical, coherent arguments supported by data and graphical representations.
• Evaluate alternative models and recognize limits of inference in argumentation.+ Show more

Learning Objectives

• Understand how friction opposes motion and how surface roughness influences resistance.
• Describe how gravity affects objects in free fall and on inclined planes.
• Differentiate between contact forces like friction and long-range forces like gravity.+ Show more

Learning Objectives

• Understand the signs that indicate a chemical change has occurred.
• Identify observable evidence such as gas formation, color change, and temperature change.
• Explain why multiple indicators together provide stronger evidence of a chemical change.+ Show more

Learning Objectives

• Understand the importance of measurement precision and uncertainty in scientific observations.
• Apply proper calibration techniques for balances and graduated cylinders.
• Use repetition of measurements to assess variability and estimate measurement error.+ Show more

Learning Objectives

• Explain how energy moves through an ecosystem from producers to consumers and decomposers
• Describe how trophic levels and metabolic processes affect the amount of usable energy available
• Use food-chain and food-web ideas to predict how changes at one trophic level can affect others+ Show more

Learning Objectives

• Explain how evolutionary change involves shifts in heritable traits across generations rather than individual lifetime changes
• Use the ideas of variation, heredity, and differential survival/reproduction to describe population-level evolution
• Distinguish between adaptation within a lifetime and evolutionary change over long time scales

Learning Objectives

• Understand the key quantities used to measure motion: distance, time, and speed.
• Learn how to accurately compute average speed from given data.
• Identify common sources of measurement error in motion experiments.+ Show more

Learning Objectives

• Explain how evidence from tests or validated models is used to evaluate a design against specific criteria
• Interpret evaluation results by connecting performance data to intended function and realistic conditions
• Identify tradeoffs between criteria and justify which option best meets constraints

Learning Objectives

• Explain the difference between genotype and phenotype in terms of genes and observable traits
• Use dominant and recessive allele ideas to predict how genotype can affect phenotype
• Describe how environmental factors can influence phenotype even when genotype is known

Learning Objectives

• Describe the physical and chemical processes that shape Earth's surface, including weathering, erosion, deposition, and mass wasting.
• Identify driving forces such as water flow, wind, glaciers, and gravity, and explain their influence on landform development.
• Link observable landforms like deltas, canyons, and dunes to specific surface processes and understand their rates of change.+ Show more

Learning Objectives

• Explain how rapid processes (storms, heavy rainfall, earthquakes, and volcanic activity) can change Earth’s surface locally.
• Describe how gradual processes can also reshape landscapes over longer times.
• Use evidence from surface changes (erosion, deposition, flooding, dunes and beaches) to connect causes to observable effects.

Learning Objectives

• Explain how the geosphere, hydrosphere, atmosphere, and biosphere interact through the movement of matter and energy
• Use examples (erosion, precipitation, evaporation, and transpiration) to describe cause-and-effect links between Earth systems
• Identify how changes in one Earth system can lead to changes in another over time

Learning Objectives

• Explain how net force affects an object's motion (speeding up, slowing down, changing direction, or staying at rest).
• Differentiate between balanced forces (net force of zero) and unbalanced forces (net force not zero).
• Use everyday examples to identify the direction and effect of forces like friction and gravity.

Learning Objectives

• Understand the role of natural resources such as groundwater, soil, and minerals.
• Explain processes of aquifer recharge, porosity, and permeability.
• Differentiate between renewable and nonrenewable resources based on geologic settings.+ Show more

Learning Objectives

• Explain how density relates mass and volume using the equation density = mass ÷ volume.
• Identify the intensive property of density and predict how it changes (or does not) when sample amount changes.
• Compare and interpret densities of different materials using qualitative and quantitative reasoning.

Learning Objectives

• Understand the purpose and types of systems models used in science and engineering.
• Identify various diagrams and visual representations such as free-body diagrams, circuit schematics, and block diagrams.
• Explain the importance of assumptions, scaling effects, and simplifications when creating models.+ Show more

Learning Objectives

• Identify observable signs that indicate a chemical reaction has occurred
• Differentiate chemical change evidence from physical change evidence
• Connect particle rearrangement to macroscopic observations such as gas, precipitates, and color change

Learning Objectives

• Interpret experimental data using patterns, variability, and measurement quality
• Explain how reliability increases when repeated measurements are similar
• Identify common sources of error and how they affect confidence in conclusions+ Show more

Learning Objectives

• Explain how energy transfers through conduction, convection, and radiation
• Identify which energy transfer mechanism is most likely occurring in everyday situations
• Describe how energy can transform from one form to another in common devices

Learning Objectives

• Interpret patterns in graphs such as scatter plots, histograms, and line graphs to support scientific claims
• Use summary measures (range and averages) to compare data sets and describe variability
• Evaluate outliers and explain how uncertainty or random variation affects conclusions

Learning Objectives

• Define design criteria and explain how they differ from constraints in engineering design.
• Use criteria to judge whether a proposed solution will meet success requirements.
• Identify common types of constraints, such as safety, cost, material limits, and scientific principles.+ Show more

Learning Objectives

• Explain how thermal energy moves from warmer objects to cooler ones using models of heat transfer
• Differentiate conduction, convection, and radiation as three ways heat can travel
• Use temperature differences to predict the direction of heat transfer in everyday situations+ Show more

Learning Objectives

• Interpret position–time graphs to determine velocity using slope and identify changing velocity using curve shape
• Interpret velocity–time graphs to determine acceleration using slope and identify zero acceleration using horizontal lines
• Use data tables with motion graphs to confirm whether motion is constant or changing