Grade 7 Worksheets

Learning Objectives

• Explain how atomic number relates to the number of protons and electrons in common cases.
• Compare particle, ball-and-stick, and lattice representations of atoms in molecules and extended structures.
• Use chemical formula notation to describe how bonding patterns affect properties such as melting point and conductivity.

Learning Objectives

• Explain the principle of the conservation of mass in closed systems during physical and chemical processes.
• Apply mass accounting techniques to reactions and dissolution processes to relate reactant and product masses.
• Balance simple chemical formulas and use sealed-system measurements to reconcile observed mass distributions with stoichiometric calculations.

Learning Objectives

• Describe different representations of atoms, including particle, ball-and-stick, and lattice models.
• Explain how atoms form molecules via covalent and ionic bonding.
• Connect subatomic particles, atomic number, and chemical formulas to the properties of materials.+ Show more

Learning Objectives

• Explain the difference between literal and figurative language and how connotation shapes meaning.
• Identify common figures of speech (such as similes and metaphors) and describe how they affect tone.
• Analyze how word choice and imagery strengthen an author’s message about emotions, themes, or conflicts.

Learning Objectives

• Understand the law of conservation of mass as a principle in physical and chemical changes.
• Identify that mass remains constant in a closed system during transformations.
• Apply concepts of mass conservation to various laboratory scenarios.+ Show more

Learning Objectives

• Analyze patterns in the fossil record to infer evolutionary relationships.
• Identify and explain the significance of index fossils and transitional forms.
• Understand stratigraphic sequences and their role in dating fossils.+ Show more

Learning Objectives

• Understand different representations of atomic structures such as particle, ball-and-stick, and lattice models.
• Identify how atomic models illustrate molecular and extended structures like water molecules and salt crystals.
• Connect subatomic particle relationships to atomic number and chemical formulas.+ Show more

Learning Objectives

• Explain how energy moves through trophic levels in a food web and why decomposers matter for energy flow.
• Describe how photosynthesis captures energy and cellular respiration releases energy in living things.
• Use energy pyramids to model the decrease in available energy between trophic levels and relate this to population size.

Learning Objectives

• Understand the concept of stratigraphic sequences and their importance in fossil record analysis.
• Identify key types of fossils such as index fossils and transitional forms.
• Analyze patterns of extinction, radiation, and morphological change over geologic time.+ Show more

Learning Objectives

• State the law of conservation of mass for a closed system during physical and chemical changes.
• Use mass accounting to relate reactant mass and product mass in sealed reactions and dissolution processes.
• Balance simple formulas or mass expectations to reconcile observed mass distributions with stoichiometric relationships.

Learning Objectives

• Understand the law of conservation of mass as a fundamental principle in physical and chemical transformations.
• Apply mass accounting techniques to analyze closed reactions and dissolution processes.
• Balance simple chemical formulas and relate reactant and product mass relationships in sealed systems.

Learning Objectives

• Understand the law of conservation of mass as a principle that total mass remains constant in a closed system during physical and chemical transformations.
• Apply mass accounting to analyze reactions and dissolution processes in closed systems.
• Recognize how balancing chemical formulas and sealed-system measurements serve as models for reconciling observed mass distributions with theoretical calculations.+ Show more

Learning Objectives

• Use the heat equation Q = mcΔT to calculate the thermal energy needed to change a substance’s temperature.
• Explain how specific heat capacity relates heat energy, mass, and temperature change.
• Describe how heat-transfer rate depends on area, temperature gradient, and time.+ Show more

Learning Objectives

• Identify a speaker’s main claim and any sub-claims within an argument.
• Evaluate whether evidence and reasoning logically connect to the speaker’s conclusion.
• Recognize when emotional language or unsupported attacks replace evidence.+ Show more

Learning Objectives

• Explain how assumptions and simplifications create limits in scientific models.
• Use evidence from observations to identify where a model may need revision.
• Describe how discrepancies can lead scientists to change parameters, add processes, or restructure a model.+ Show more

Learning Objectives

• Identify main ideas about why populations change over time.
• Use key vocabulary: birth rate, death rate, immigration, emigration, carrying capacity, and limiting factors.
• Explain how birth and death and movement into and out of a habitat affect population size.

Learning Objectives

• Understand the factors that influence population size and distribution.
• Explain the concepts of exponential and logistic growth patterns.
• Analyze how predator-prey interactions affect population dynamics.+ Show more

Learning Objectives

• Explain how births, deaths, immigration, and emigration change population size and distribution
• Describe carrying capacity and limiting factors and how they affect population growth
• Compare exponential and logistic growth patterns using real population examples+ Show more

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

• 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 birth and death rates and migration affect population size and distribution
• Compare exponential and logistic growth patterns using carrying capacity and limiting factors
• Describe how resources, disease, and competition influence population dynamics and species interactions

Learning Objectives

• Identify hazards and categorize risks in science activities
• Interpret safety data sheet information for safer choices
• Select engineering controls that reduce exposure to hazards+ Show more

Learning Objectives

• Distinguish figurative language from literal language and explain how it changes meaning.
• Identify how connotation influences tone and the reader’s interpretation.
• Analyze comparisons, imagery, and figurative phrases to explain emotions, themes, or conflicts.+ Show more

Learning Objectives

• Understand the law of conservation of mass and its fundamental principles.
• Apply mass accounting to chemical and physical processes in closed systems.
• Recognize how balancing chemical equations relates to mass conservation.+ Show more

Learning Objectives

• Understand how temperature gradients influence different environmental conditions
• Identify the effects of temperature on organisms and habitats
• Recognize the importance of abiotic factors in shaping ecosystems

Learning Objectives

• Understand the process of photosynthesis and how plants convert sunlight into chemical energy.
• Identify the key components involved in photosynthesis such as light, carbon dioxide, water, and sugars.
• Recognize the importance of photosynthesis in supporting ecosystems and energy transfer among organisms.

Learning Objectives

• Use stratigraphic order to reconstruct timelines from sedimentary layers
• Identify how index fossils correlate rock layers across regions
• Explain how transitional fossils support common ancestry+ Show more

Learning Objectives

• Understand the law of conservation of mass as a fundamental principle in physical and chemical changes.
• Apply mass accounting techniques to closed reactions and dissolution processes.
• Balance simple chemical formulas to relate reactant and product mass.+ Show more

Learning Objectives

• Understand the process by which producers convert light energy into chemical energy during photosynthesis.
• Identify the key components and reactants involved in photosynthesis.
• Explain how energy and matter flow through ecosystems via photosynthesis and food chains.+ Show more

Learning Objectives

• Understand how fossil record patterns provide evidence for common ancestry and macroevolution.
• Identify key concepts such as stratigraphic sequences, index fossils, and transitional forms.
• Analyze how dating methods and fossil correlations support evolutionary theories.+ Show more

Learning Objectives

• Describe how energy transfers through different trophic levels in ecosystems.
• Explain the roles of producers, consumers, and decomposers in energy pyramids and food webs.
• Analyze the processes of photosynthesis and cellular respiration as mechanisms for energy capture and release.+ Show more

Learning Objectives

• State the law of conservation of mass for a closed system.
• Use mass accounting to relate the masses of reactants and products in sealed transformations.
• Apply conservation of mass to physical processes like dissolution and to chemical reactions using observations and simple balancing ideas.

Learning Objectives

• Understand the key factors that influence population size and distribution.
• Differentiate between exponential and logistic growth patterns.
• Identify how predator-prey relationships affect population oscillations.+ Show more

Learning Objectives

• Understand the basic concepts of structural optimization
• Identify different optimization strategies used in engineering
• Recognize the importance of performance-based criteria and constraints in design

Learning Objectives

• Describe the key abiotic factors such as temperature, light, soil, moisture, and pH that influence environments.
• Explain how abiotic variability creates microhabitats within different ecosystems.
• Illustrate the relationship between physical gradients and organismal tolerance ranges.+ Show more

Learning Objectives

• Analyze the significance of stratigraphic sequences and index fossils in understanding Earth's history.
• Identify key transitional fossils that demonstrate morphological change and lineage continuity.
• Explain how comparative dating and fossil correlation support theories of macroevolution and extinction events.+ Show more

Learning Objectives

• Understand how atomic models represent the structure of atoms and molecules.
• Identify different types of atomic models: particle, ball-and-stick, and lattice structures.
• Explain the relationship between subatomic particles, atomic number, and chemical formulas.+ Show more

Learning Objectives

• Analyze patterns in the fossil record, including diversity, extinction events, and morphological change over geologic time
• Explain how stratigraphy and index fossils support correlation and inferences about ancestry
• Describe how transitional fossils provide evidence for evolutionary continuity

Learning Objectives

• Identify how stratigraphic layers and index fossils help scientists interpret the fossil record over geologic time.
• Explain how transitional fossils provide evidence for anatomical change and lineage continuity.
• Compare evidence for macroevolutionary patterns such as radiation events and mass extinctions.

Learning Objectives

• Explain how fossil patterns in stratigraphic layers provide evidence for common ancestry and evolutionary change over geologic time.
• Use index fossils and correlations between sedimentary layers to infer relative ages and interpret changes in fossil assemblages.
• Analyze how transitional fossils and morphological trends support ideas about lineage continuity, radiations, and mass extinctions.

Learning Objectives

• Explain how atoms move through an ecosystem during matter cycling processes such as photosynthesis, respiration, feeding, and decomposition.
• Describe how decomposers return nutrients to soil and water so that new plants can grow.
• Distinguish matter cycling (reused atoms) from energy flow (one-way transfer with heat loss).

Learning Objectives

• Understand how fossil records reveal patterns of succession, diversity, and extinction events.
• Identify key fossil types such as index fossils and transitional forms like Archaeopteryx and Tiktaalik.
• Analyze stratigraphic sequences to infer evolutionary relationships and timing of macroevolutionary trends.+ Show more

Learning Objectives

• Understand the relationship between heat, mass, and temperature change using the equation Q = mcΔT.
• Calculate the amount of heat energy required to change the temperature of various substances.
• Explain factors affecting heat transfer such as area, temperature gradient, and time.+ Show more

Learning Objectives

• Understand the relationship between heat, mass, and temperature change using the formula Q = mcΔT.
• Recognize units such as joules and watts used to measure heat and power.
• Apply the specific heat capacity concept to estimate energy required for heating substances.+ Show more

Learning Objectives

• Understand the significance of fossil patterns in revealing evolutionary history.
• Identify key concepts such as stratigraphy, index fossils, transitional forms, and macroevolutionary trends.
• Analyze fossil evidence to infer common ancestry and extinction events.+ Show more

Learning Objectives

• Distinguish between genotype (genetic makeup) and phenotype (observable traits).
• Explain how dominant and recessive alleles affect the traits that are expressed.
• Use genotype–phenotype reasoning to interpret patterns in families or hypothetical crosses.

Learning Objectives

• Use the relationship Q = mcΔT to estimate the thermal energy needed to change a substance’s temperature.
• Explain how specific heat capacity links material identity to temperature change for a given mass and added heat.
• Describe how heat-transfer rate depends on area, temperature gradient, and time.

Learning Objectives

• Analyze patterns in the fossil record to understand evolutionary relationships.
• Identify key concepts such as stratigraphy, index fossils, and transitional forms.
• Interpret data from fossil assemblages and understand their significance in macroevolution.+ Show more