Grade 7 Science Worksheets

Learning Objectives

• Distinguish between balanced and unbalanced forces using the idea of net force
• Predict how an object’s motion (speed and/or direction) changes when forces are balanced versus unbalanced
• Connect real-life examples, such as tug-of-war, to acceleration and constant velocity

Learning Objectives

• Explain the conservation of matter principle in terms of atoms being rearranged during chemical reactions.
• Use the idea of a closed system to predict when total mass should stay the same before and after a reaction.
• Apply conservation of mass to interpret evidence from sealed-container experiments.

Learning Objectives

• Explain how density links mass and volume and distinguish it from length or size.
• Calculate or reason about density using the relationship between mass and volume.
• Use density to predict whether objects will sink or float in different fluids.

Learning Objectives

• Explain how energy transfers from higher-energy objects or systems to lower-energy ones
• Describe how energy can change form during a transfer (energy transformation)
• Connect energy transfers to observable effects such as temperature change, motion, or light emission

Learning Objectives

• Explain how forces (pushes and pulls) can change an object’s motion.
• Differentiate balanced forces from unbalanced forces using the concept of net force.
• Use evidence from real-life examples to predict changes in speed or direction.+ Show more

Learning Objectives

• Explain how friction and other resistive forces oppose motion.
• Compare how surface texture and air resistance affect how quickly objects slow down.
• Use direction of net force to describe realistic (not ideal) motion.

Learning Objectives

• Define acceleration as the rate of change of velocity, including direction (positive or negative).
• Explain how mass (inertia) affects acceleration when the same net force acts on different objects.
• Identify constant vs. changing acceleration from how velocity changes over time.+ Show more

Learning Objectives

• Explain how thermal energy moves using models of conduction, convection, and radiation
• Use temperature differences to predict the direction of heat transfer
• Describe how energy transfer can change the temperature of materials over time+ Show more

Learning Objectives

• Explain how habitat fragmentation divides ecosystems into isolated patches and how this affects species interactions and populations.
• Describe edge effects and their impacts on microclimate, predation risk, and invasive species.
• Evaluate how connectivity (corridors and gene flow) can reduce extinction risk and support ecosystem resilience.

Learning Objectives

• Explain how invasive species spread beyond their native range and why they can outcompete native organisms.
• Describe ecological consequences of invasive species, including impacts on food webs, energy flow, and nutrient cycles.
• Evaluate how long-term changes in ecosystems can result from invasive species becoming established.

Learning Objectives

• Explain how competition, predation, and mutualism affect population sizes and community composition.
• Describe how niches and resource use influence whether species coexist or face competitive exclusion.
• Use evidence from scenarios to identify interaction types and predict possible outcomes.

Learning Objectives

• Explain how exponential and logistic population models describe population change over time.
• Identify how carrying capacity and density-dependent and density-independent factors affect population growth.
• Use models to make predictions about population patterns in real ecosystems.

Learning Objectives

• Explain how producers capture energy through photosynthesis and form the base of energy pyramids.
• Distinguish between primary, secondary, and tertiary consumers based on what they eat.
• Describe why energy transfer between trophic levels is inefficient and how this limits population sizes.+ Show more

Learning Objectives

• Explain how cells communicate using chemical signals and electrical signals
• Describe how receptor proteins trigger intracellular pathways that change cell activity
• Compare direct cell-to-cell connections (gap junctions and plasmodesmata) with signal reception through receptors+ Show more

Learning Objectives

• Explain how chloroplasts capture light energy and convert it into chemical energy during photosynthesis
• Describe the roles of thylakoid membranes and the stroma in the light reactions and Calvin cycle
• Connect how carbon dioxide is fixed into sugars and how stored starch supports cellular energy needs+ Show more

Learning Objectives

• Explain how diffusion and osmosis are passive transport processes driven by concentration differences.
• Describe how a semipermeable membrane affects the movement of water in osmosis.
• Predict how environmental factors (temperature, surface area, concentration gradient) can change the rate of diffusion and osmosis.+ Show more

Learning Objectives

• Explain the roles of photosynthesis and cellular respiration in transferring energy in plants
• Use vocabulary correctly to describe gas exchange and energy conversion
• Identify the main idea of scientific paragraphs and choose supporting concepts

Learning Objectives

• Explain how specialized cell structures help cells perform specific functions in the body
• Match common specialized cells (red blood cells, neurons, root hair cells) to their main roles
• Describe how cell specialization supports tissue and organ function in organisms+ Show more

Learning Objectives

• Explain how surface area and volume affect the ability of cells to exchange materials.
• Describe how increasing surface area-to-volume ratio improves diffusion and transport.
• Identify examples of structural adaptations that increase exchange surfaces in cells and organisms.

Learning Objectives

• Identify the three principal tectonic plate boundary types: divergent, convergent, and transform.
• Describe the characteristic landforms and geologic processes produced by each boundary type.
• Explain how plate motion along boundaries relates to earthquakes, volcanic activity, and mountain building.

Learning Objectives

• Explain how accumulated tectonic stress leads to earthquakes along faults
• Compare normal, reverse, and strike-slip fault motion and how each reflects stress regimes
• Describe how earthquake magnitude, depth, and local geology affect shaking and seismic intensity+ Show more

Learning Objectives

• Explain how erosion detaches sediment and how transport moves sediment by water, wind, ice, and gravity
• Describe how transport energy and distance affect grain size and sorting in sedimentary records
• Interpret landscape history using clues such as graded bedding, till, moraines, loess, and dunes

Learning Objectives

• Explain how magma is generated through decompression, volatile addition, and heat transfer
• Describe how cooling rate influences igneous texture and the difference between intrusive and extrusive rocks
• Compare how fractional crystallization and magma mixing change magma composition+ Show more

Learning Objectives

• Explain how tectonic uplift, volcanic construction, and surface processes work together to shape landscapes over time
• Compare how uplift rates versus erosion rates affect whether topography rises or is worn down
• Describe how climate influences weathering and transport efficiency, changing sediment supply to basins+ Show more

Learning Objectives

• Explain how heat, pressure, and chemically active fluids change rocks during metamorphism without complete melting
• Compare contact metamorphism and regional metamorphism and predict resulting rock textures
• Describe how metamorphic reactions and index minerals help identify metamorphic grade+ Show more

Learning Objectives

• Classify rocks as igneous, sedimentary, or metamorphic based on their formation and textures.
• Use observable evidence such as grain size, mineral composition, and structures to infer rock type.
• Explain how tectonic processes and Earth’s changing conditions can transform rocks over time.

Learning Objectives

• Explain how weathering, transport, deposition, and lithification work together to form sedimentary rocks.
• Compare mechanical and chemical weathering and describe how each contributes to sediment production.
• Interpret how depositional environments influence bedding, fossils, and sedimentary structures.+ Show more

Learning Objectives

• Explain how magma composition affects the shape and behavior of volcanoes.
• Describe how eruption style and tectonic setting influence volcanic landforms and deposits.
• Connect volcanic activity to changes in local topography and the formation of volcanic soils.

Learning Objectives

• Differentiate physical, chemical, and biological weathering processes at Earth’s surface
• Explain how freeze-thaw cycles, thermal expansion, oxidation, hydrolysis, and dissolution affect rocks and minerals
• Describe how soil formation and climate influence weathering rates and landscape change+ Show more

Learning Objectives

• Define chemical properties and explain how they help predict chemical reactions.
• Identify observable evidence (gas, color change, temperature change, or pH change) that indicates chemical reactions.
• Differentiate reactivity with acids/bases, flammability, oxidation tendency, and pH behavior as chemical properties.

Learning Objectives

• Explain how matter and energy behavior differ between open and closed systems
• Use system boundaries to predict whether a reaction will show mass conservation
• Interpret evidence from experiments by accounting for matter transfer into or out of a system

Learning Objectives

• Explain how the conservation of mass is tested using mass measurements of reactants and products in a closed system.
• Use careful measurement and correct system boundaries to account for gases and dissolved substances.
• Describe how precision and control of experimental conditions affect observed mass changes.

Learning Objectives

• Identify physical and chemical properties used to select materials for specific applications
• Explain how chemical stability and corrosion resistance affect a material’s suitability
• Use property information (e.g., density, strength, melting point, solubility, reactivity) to justify material choices+ Show more

Learning Objectives

• Differentiate between mixtures and pure substances based on composition and particle uniformity
• Identify homogeneous versus heterogeneous mixtures using observable traits
• Connect physical properties (such as solubility, density, and boiling point) to appropriate separation methods+ Show more

Learning Objectives

• Explain how physical changes alter a substance’s appearance or form without changing its chemical identity.
• Identify common physical changes, including phase changes and reversible changes caused by changing conditions.
• Use particle ideas to justify why some changes are physical rather than chemical.

Learning Objectives

• Define physical properties and explain how they help identify and sort substances
• Describe density and solubility and connect each property to measurable observations
• Use evidence from measurements to separate mixtures and make material choices

Learning Objectives

• Use physical and chemical properties to predict whether a substance is likely to react in a given situation.
• Identify evidence of chemical change (new substances formed) and relate it to energy changes.
• Apply property trends such as reactivity with oxygen, acid–base behavior, flammability, and solubility to anticipate products.

Learning Objectives

• Classify chemical reactions as synthesis, decomposition, single displacement, double displacement, acid–base neutralization, or combustion
• Use particle-level reasoning to explain how atoms are conserved during reaction type changes
• Predict the general product type for common reaction patterns using balanced chemical ideas

Learning Objectives

• Explain density using the particle view, including how particle spacing affects mass per unit volume.
• Describe how heating can change density by increasing volume while mass stays the same.
• Use density differences to interpret sinking and floating behavior in different materials.+ Show more

Learning Objectives

• Explain how friction opposes relative motion and how that affects net force
• Predict motion outcomes when applied force is less than, equal to, or greater than friction
• Describe how surface texture changes the magnitude of friction

Learning Objectives

• Explain how energy transfer affects particle motion and arrangement during phase changes
• Use the particle model to describe why temperature can stay nearly constant during a phase change
• Differentiate melting, freezing, evaporation, and condensation using solid–liquid–gas relationships+ Show more

Learning Objectives

• Explain how heating increases particle kinetic energy and spacing, causing thermal expansion in solids and liquids.
• Describe how cooling decreases particle motion and can lead to contraction.
• Predict how temperature changes can affect gas pressure in confined spaces.

Learning Objectives

• Explain how cells convert chemical energy from food into usable energy for life processes.
• Describe how ATP stores and transfers energy inside cells.
• Use the idea of matter conservation to explain what happens to nutrients during energy use.+ Show more

Learning Objectives

• Compare design alternatives using clear criteria and constraints to select the best solution.
• Explain how iterative refinement changes a design when test results do not meet constraints.
• Justify a final choice by linking criteria to observed outcomes and describing managed tradeoffs.

Learning Objectives

• Explain what tradeoffs are in design and why they happen when criteria improve while other limits worsen.
• Use criteria and constraints to compare multiple design options and identify acceptable and unacceptable tradeoffs.
• Represent tradeoffs clearly using simple mapping tools (tables, charts, or decision statements).

Learning Objectives

• Identify and describe major types of biotic interactions (predation, competition, mutualism, commensalism, parasitism).
• Explain how changes to one species can affect other species and community structure.
• Use evidence from scenarios to determine the type and direction of benefit or harm in an interaction.

Learning Objectives

• Explain how conservation strategies such as protected areas, habitat restoration, invasive species control, and sustainable harvesting reduce human impacts.
• Use ecological ideas (food webs, population dynamics, and abiotic constraints) to predict why conservation actions help ecosystems.
• Evaluate and propose conservation strategies using adaptive monitoring and evidence-based decision-making.

Learning Objectives

• Explain how disturbances such as fire, flood, landslides, and windthrow change habitats and affect populations.
• Describe how frequency, intensity, and spatial scale influence whether disturbances increase diversity or cause declines.
• Identify examples of species responses to disturbance regimes, including rapid rebound and local extirpation.+ Show more