Science Worksheets

Learning Objectives

• Explain how scientists compare properties of substances before and after an interaction to determine if a new substance forms.
• Identify evidence of chemical change, including changes in color, formation of a solid, gas release, and new material with different behavior.
• Distinguish between physical changes (appearance changes without new substances) and chemical changes (new substances with new properties).

Learning Objectives

• Explain how human actions can change the movement of water through Earth systems
• Describe how dams, withdrawals, pollution, and land-cover change can affect water quality and habitats
• Use cause-and-effect reasoning to predict impacts on aquatic life and flood risk

Learning Objectives

• Describe how hazard mapping combines geological, hydrological, and climatic data to estimate hazard frequency, magnitude, and spatial patterns.
• Interpret return-period ideas and scenario comparisons to understand how hazards intersect with infrastructure and land use.
• Use hazard maps to explain planning, risk communication, and resilience decisions without prescribing specific policies.

Learning Objectives

• Identify and write clear success measures for a design problem using criteria and constraints.
• Explain how limitations (materials, cost, and safety) affect possible solutions.
• Use cause-and-effect reasoning to predict impacts on people and natural systems.

Learning Objectives

• Explain how energy is transferred during photosynthesis and respiration in plants and animals.
• Describe how matter cycles between living things and the environment using gases and organic molecules.
• Connect leaf gas exchange (stomata) to measurements of oxygen consumption and energy use.

Learning Objectives

• Explain how evaporation adds water vapor to the atmosphere when temperatures increase.
• Describe how transpiration from plants contributes water vapor to the air.
• Connect phase changes to the hydrosphere and atmosphere and the start of precipitation.

Learning Objectives

• Explain how cells communicate using chemical and electrical signals
• Describe how receptors and signal transduction pathways connect to specific cell responses
• Compare rapid nervous impulses with longer-lasting endocrine effects using feedback circuits+ Show more

Learning Objectives

• Explain how genes on chromosomes can produce dominant and recessive inheritance patterns.
• Use Mendelian cross models to predict possible offspring trait ratios.
• Construct simple inheritance models and describe how model predictions can be limited.

Learning Objectives

• Explain how birth rate, death rate, and resource availability affect population size over time.
• Interpret data trends to infer whether a population is increasing or decreasing and why.
• Use evidence from seasonal or habitat changes to support a population-change claim.

Learning Objectives

• Explain how conduction transfers kinetic energy in solids through particle-to-particle collisions
• Compare how different materials conduct heat using conductivity ideas
• Describe how interfaces, material contact, and contact resistance influence heat flow and temperature gradients+ Show more

Learning Objectives

• Explain how total energy in a closed system stays conserved while energy changes forms.
• Differentiate heat transfer and work as two mechanisms for energy exchange.
• Use energy-before-and-after reasoning to predict temperature and motion changes in real interactions.

Learning Objectives

• Compare conservation strategies, habitat restoration, protected area design, and invasive species management for biodiversity outcomes.
• Analyze trade-offs among effectiveness, feasibility, and economic constraints in maintaining ecosystem services.
• Explain how different solutions can support pollination, water purification, and nutrient cycling under changing environmental pressures.

Learning Objectives

• Explain how ionic, covalent, and metallic bonding models help predict macroscopic material properties.
• Use ideas like bond polarity, lattice energy, and intermolecular forces to connect structure with melting point, solubility, conductivity, and viscosity.
• Relate molecular geometry and particle arrangement to phase behavior, hardness, and thermal performance.

Learning Objectives

• Use particle models to count atoms of each element on both sides of a chemical reaction
• Explain how conservation of matter is supported by matching atom counts in reactants and products
• Use evidence from particle-level reasoning to justify claims about new substances

Learning Objectives

• Explain how gravitational attraction depends on mass and distance using Earth–Moon and falling-object examples
• Differentiate gravitational forces from contact forces like friction and how each affects motion
• Use evidence and reasoning to argue why changing mass or separation changes attraction+ Show more

Learning Objectives

• Explain how atoms are conserved during chemical reactions using particle diagrams.
• Describe reactants and products as rearrangements of atoms rather than creation or destruction.
• Use particle-level evidence to connect conservation of atoms to observable changes.

Learning Objectives

• Explain how heritable variation and natural selection contribute to adaptation in populations.
• Describe how geographic separation and reproductive isolation lead to speciation.
• Use evidence (morphology, reproductive compatibility, and biogeography) to support claims about speciation.

Learning Objectives

• Explain how limiting resources affect population size in an ecosystem.
• Identify examples of limiting resources such as nutrients, water, and space.
• Describe how organisms may respond when resources become scarce.

Learning Objectives

• Explain how animals use matter from food to build body parts and grow.
• Describe how animals use energy from food to power life processes.
• Connect how matter enters an animal’s body and how matter leaves as waste or through breathing.

Learning Objectives

• Explain how physical and chemical weathering break rocks into sediments
• Describe how sediments move and deposit to form layered materials over time
• Connect biological processes to the formation of soil and nutrient availability+ Show more

Learning Objectives

• Explain how particle models distinguish physical changes from chemical reactions.
• Use particle ideas to describe how atoms and arrangements change during matter changes.
• Connect evidence of new substances to conservation of atoms.

Learning Objectives

• Explain how food provides chemical building materials and stored energy to the body.
• Describe how digestion breaks large food molecules into smaller molecules that can be absorbed.
• Connect specific food molecules with different body needs (like proteins for structure and carbohydrates for quick energy).+ Show more

Learning Objectives

• Explain how engineering solutions reduce harm to Earth systems and human populations during hazards.
• Evaluate trade-offs among effectiveness, cost, and environmental impacts in mitigation planning.
• Describe how uncertainty and system-wide effects influence mitigation tool decisions.

Learning Objectives

• Explain how sensing, signaling, and effectors work together in feedback mechanisms to maintain homeostasis.
• Identify whether a change triggers negative or positive feedback and predict its overall effect on internal conditions.
• Describe how dynamic feedback loops support stable conditions for cell function.

Learning Objectives

• Explain how allele frequencies can change across generations when environments shift
• Describe how natural selection acts on heritable traits that affect fitness in a given environment
• Interpret how genetic variation and selection pressure influence population outcomes over time

Learning Objectives

• Explain how carbon and nitrogen move into and out of living systems through key processes such as photosynthesis, respiration, decomposition, and uptake.
• Describe the role decomposers play in nutrient recycling and how this supports ecosystem-level matter movement.
• Connect organismal activity (food webs) to biogeochemical cycles by using cause-and-effect reasoning.

Learning Objectives

• Explain power as the rate of energy transfer and connect it to everyday electrical devices.
• Use relationships between current, voltage, and power to describe how circuit elements dissipate energy as heat.
• Describe how efficiency affects how much electrical energy becomes useful output versus wasted heat.

Learning Objectives

• Explain how mutations create genetic variation that can influence traits.
• Differentiate between mutation effects (neutral, harmful, beneficial) and how environment affects trait expression.
• Connect inherited variation to the raw material for evolution in natural populations.

Learning Objectives

• Explain how amplitude, frequency, wavelength, and wave speed relate to energy transfer in waves
• Predict how reflection, refraction, and diffraction change a wave’s direction or pattern
• Use interference and resonance ideas to describe regions of constructive/destructive overlap and amplified oscillations

Learning Objectives

• Explain how multiple lines of evidence (fossils, comparative anatomy, and molecular data) support common ancestry.
• Identify how homologous structures and genetic similarities indicate evolutionary relationships.
• Distinguish between evidence that suggests shared ancestry and differences that result from evolutionary change.

Learning Objectives

• Explain how photosynthesis stores energy in chemical bonds and how cellular respiration releases usable energy.
• Describe the role of rearranging atoms and transferring energy during chemical reactions.
• Connect chemical energy transformations to ecosystem energy availability.

Learning Objectives

• Explain how natural selection can increase the frequency of heritable traits that improve survival and reproduction.
• Identify the key requirements for adaptation by selection: variation, heritability, and differential reproductive success.
• Describe how environmental pressures can change trait frequencies over many generations.

Learning Objectives

• Explain how the relative positions of the Sun, Earth, and Moon determine which parts of the Moon are illuminated from Earth.
• Describe the sequence and timing of lunar phases (new, crescent, quarter, gibbous, full) using illumination geometry rather than measurements.
• Differentiate lunar phases from eclipses by identifying what changes in each event.

Learning Objectives

• Explain chemical reactions using the particle model of bonds breaking and forming.
• Describe conservation of atoms and how balanced equations reflect it.
• Connect microscopic rearrangements to observable macroscopic changes in reactants and products.

Learning Objectives

• Describe multiple types of evidence used to reconstruct past climate changes, including ice cores and trapped gases.
• Explain how greenhouse gases, aerosols, and Earth’s reflectivity can work together to affect temperature over long time scales.
• Evaluate whether specific statements about climate evidence and interpretation are accurate.

Learning Objectives

• Explain how Earth’s axial tilt causes different hemispheres to receive different amounts of sunlight during the year
• Describe how Earth’s orbit affects the timing of equinoxes and solstices through changes in solar elevation
• Connect sunlight angle and day length to seasonal differences in climate and biological cycles

Learning Objectives

• Explain how natural resources influence infrastructure, economic decisions, and environmental outcomes.
• Differentiate renewable and nonrenewable resources by replenishment rate and regional availability.
• Describe how resource demand and extraction byproducts can affect water, land, energy, and ecosystems.

Learning Objectives

• Explain how wavelength and frequency relate to the energy of electromagnetic radiation.
• Classify parts of the electromagnetic spectrum in order of increasing energy.
• Describe how absorption, emission, reflection, and scattering depend on wavelength and atomic energy levels.+ Show more

Learning Objectives

• Explain how land-use change, extraction, and waste management can alter Earth’s material cycles.
• Describe how changes in the geosphere, hydrosphere, atmosphere, and biosphere connect and affect water quality and air quality.
• Use evidence-based reasoning to predict measurable near-surface and surface chemistry changes caused by human activity.

Learning Objectives

• Explain how organelles work together through physical and chemical interactions to maintain cell function.
• Describe how cell membranes create compartments and regulate transport of substances.
• Evaluate how energy-requiring reactions support cellular structure and life processes.

Learning Objectives

• Explain how engineering solutions communicate design choices using criteria, constraints, and expected performance.
• Use models and diagrams to interpret assumptions, parameter meanings, and relationships among subsystems in a technical design.
• Describe trade-offs and justify decisions using clear scientific communication.

Learning Objectives

• Explain how digital transmission converts continuous signals into discrete levels represented by bits.
• Describe how noise affects communication and how error correction improves reliability.
• Analyze the tradeoff between sampling rate, bandwidth, and data requirements in digital systems.

Learning Objectives

• Explain how allele segregation during gamete formation contributes to predictable inheritance patterns.
• Use probability ideas to describe expected genotype or phenotype frequencies in large groups.
• Distinguish between random assortment of alleles and predictable statistical outcomes.

Learning Objectives

• Explain energy conservation using energy accounting between interacting components
• Identify common energy forms (gravitational potential, kinetic, thermal, and field energy) and how they transfer
• Use qualitative energy bookkeeping to predict what happens to energy during real processes

Learning Objectives

• Explain how matter cycles through Earth’s reservoirs (geosphere, hydrosphere, atmosphere, biosphere).
• Describe how energy from the Sun and Earth’s internal heat drives phase changes and transport.
• Connect material cycling to long-term patterns like the rock cycle and the water cycle.+ Show more

Learning Objectives

• Explain how birth and death rates, immigration and emigration, and carrying capacity affect population size
• Compare exponential growth with logistic growth using real-world examples of organisms
• Describe density-dependent and density-independent limiting factors and how they influence populations over time

Learning Objectives

• Explain how current and voltage measurements describe circuit performance
• Identify conceptually where current and voltage instruments are connected in a circuit
• Interpret common measurement readings and patterns to infer component behavior+ Show more

Learning Objectives

• Explain how differences in temperature and moisture between air masses affect clouds and precipitation.
• Describe how pressure differences and density changes create winds and influence weather over time.
• Connect fronts and lifting processes to cooling, condensation, and the development of weather systems.