Grade 7 Science Worksheets

Learning Objectives

• Understand the various separation techniques used in science.
• Identify the appropriate separation method for different mixtures.
• Explain the steps involved in processes such as filtration, evaporation, and distillation.+ Show more

Learning Objectives

• Understand the fundamental principles of convection currents in atmospheric and oceanic systems.
• Identify the factors that influence convection in different environments.
• Analyze the effects of convection currents on weather patterns and climate.+ Show more

Learning Objectives

• Understand key factors affecting thermal performance of materials.
• Analyze different design solutions to optimize thermal performance.
• Evaluate the effectiveness of various insulation and cooling techniques.+ Show more

Learning Objectives

• Explain how meiosis produces genetic variation through chromosome segregation and independent assortment
• Compare meiosis outcomes to mitosis in terms of chromosome number and genetic similarity
• Use vocabulary related to meiosis (homologous chromosomes, crossing over, gametes, alleles) to describe variation and inheritance+ Show more

Learning Objectives

• Describe how Earth's tilt and orbit influence seasons and day length.
• Explain the relationship between Earth's position relative to the sun and observable patterns in daylight and temperature.
• Understand how the apparent motion of the sun supports calendar and timekeeping systems.+ Show more

Learning Objectives

• Identify the four main Earth system spheres: atmosphere, hydrosphere, geosphere, and biosphere.
• Explain how water, gases, and rocks move among Earth's spheres.
• Describe how changes in one sphere can affect others, such as climate change impacts.+ Show more

Learning Objectives

• Understand how human activities impact Earth's spheres and create feedback loops.
• Identify examples of human activities that influence the atmosphere, biosphere, and geosphere.
• Explain how feedback mechanisms can amplify or reduce environmental changes.+ Show more

Learning Objectives

• Explain the different methods of heat transfer: conduction, convection, and radiation.
• Identify real-world examples of heat transfer processes.
• Describe how temperature differences drive heat flow.+ Show more

Learning Objectives

• Understand how sound waves reach the observer and how they change along the path.
• Identify factors that affect loudness, pitch, and sound intensity.
• Explain how surfaces reflect sound to produce echoes and how materials absorb sound.+ Show more

Learning Objectives

• Understand how vibrating objects produce sound waves in a medium.
• Identify how frequency affects pitch and amplitude affects loudness.
• Explain the dependence of sound transmission on a medium like air.+ Show more

Learning Objectives

• Understand how forces act as causes of motion changes.
• Differentiate between balanced and unbalanced forces.
• Explain how friction, air resistance, and gravity influence motion.+ Show more

Learning Objectives

• Explain how natural selection depends on heritable variation and differential survival and reproduction
• Describe how trait frequencies in a population can change over many generations
• Distinguish natural selection from individual organisms “trying” to adapt during their lifetime+ Show more

Learning Objectives

• Explain how tradeoffs occur when improving one design criterion can worsen another due to constraints
• Map competing design options to criteria and constraints to decide which tradeoffs are acceptable
• Use intended function and acceptable limits (such as safety and feasibility) to justify design choices

Learning Objectives

• Explain how optimization uses explicit criteria to compare design changes under constraints
• Identify common optimization metrics such as strength-to-weight ratio, operating cost, and energy conversion efficiency
• Evaluate tradeoffs by describing how improving one metric can affect other performance requirements+ Show more

Learning Objectives

• Identify independent, dependent, and controlled variables in a scientific investigation
• Explain why controlled variables are necessary for fair comparisons
• Interpret relationships shown in data tables and graphs by linking dependent and independent variables

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

• Explain how to interpret patterns and relationships in scientific graphs such as scatter plots, histograms, and line graphs
• Use summary measures (range and averages) while also considering variability and outliers
• Evaluate the strength of evidence for a scientific claim, including uncertainty and random variation

Learning Objectives

• Explain how a scientific model represents a real system using simplified relationships.
• Use model relationships to make and evaluate predictions about natural phenomena.
• Identify assumptions and limitations of models when evidence conflicts with predictions.

Learning Objectives

• Explain how scientists connect observations to claims using measurable data.
• Use appropriate units, scales, and comparisons to interpret data sets.
• Differentiate direct observations from interpretations when forming conclusions.+ Show more

Learning Objectives

• Explain how empirical investigations produce evidence to support scientific claims
• Identify how uncertainty and alternative interpretations are handled in scientific reasoning
• Describe how new data can refine, adjust, or replace scientific models over time

Learning Objectives

• Explain how energy transfers occur through conduction, convection, and radiation
• Identify and compare the evidence of different energy transfer mechanisms in everyday situations
• Describe how energy can transform from one form into another in common devices

Learning Objectives

• Identify macroscopic evidence that indicates a chemical reaction is occurring.
• Differentiate chemical changes from physical changes using observable and irreversible signs.
• Explain how particle rearrangement connects to observations such as gas production, color change, and precipitate formation.

Learning Objectives

• Differentiate between physical changes and chemical changes using evidence from observations.
• Identify indicators of chemical change such as gas production, precipitate formation, color change, or temperature change.
• Explain how matter can change form or state without creating a new substance.+ Show more

Learning Objectives

• Understand the functions of different organ systems in the human body.
• Identify structures such as capillaries and alveoli that contribute to life processes.
• Explain how organ systems work together to maintain internal stability.+ Show more

Learning Objectives

• Identify physical properties (such as color, texture, state, and density) and explain how they can be observed or measured.
• Distinguish chemical properties from physical properties using examples like flammability and rusting.
• Use properties to support the classification of substances under consistent conditions.

Learning Objectives

• Explain how surface-area-to-volume ratio affects cell size and function.
• Describe adaptations that increase exchange surfaces in cells and organisms.
• Understand how multicellular organisms overcome surface area limitations through specialized structures.

Learning Objectives

• Distinguish elements, compounds, and mixtures based on composition and how particles are combined
• Classify mixtures as homogeneous or heterogeneous using visible and uniform properties
• Explain how matter classification helps predict what will happen during physical and chemical changes

Learning Objectives

• Explain how evidence from tests and validated models supports evaluation of design solutions.
• Interpret evaluation results by connecting performance to stated criteria and realistic conditions.
• Identify common failure modes and describe how evidence can reveal them.+ Show more

Learning Objectives

• Explain how gravity acts as a force and how it affects the motion of objects near Earth
• Differentiate between mass and weight and describe how weight depends on gravity strength
• Interpret how acceleration due to gravity relates to falling objects, especially when air resistance is minimal+ Show more

Learning Objectives

• Explain how friction and air resistance oppose motion and affect how quickly objects slow down.
• Describe how surface texture and contact between surfaces influence the size of resistive forces.
• Use the idea of resistive forces acting opposite motion to predict realistic motion outcomes.

Learning Objectives

• Understand the structure and function of mitochondria in energy production.
• Explain how mitochondria oxidize nutrients to generate ATP.
• Describe the role of electron transport chains and membrane gradients in energy synthesis.+ Show more

Learning Objectives

• Explain how forces (pushes and pulls) can change an object’s motion.
• Differentiate balanced forces from unbalanced forces using the idea of net force.
• Use examples such as friction to predict how an object’s speed or direction will change.

Learning Objectives

• Understand the causes and effects of earthquakes related to fault movements.
• Identify different fault types and their seismic signatures.
• Explain how seismic waves are generated and how they travel through the Earth.+ Show more

Learning Objectives

• Explain Newton’s third law using the action-reaction force pair for interacting objects
• Identify how equal and opposite forces relate to contact and noncontact interactions
• Use mass and Newton’s second law to reason about why accelerations may differ

Learning Objectives

• Understand the three principal boundary types and their characteristic landforms.
• Identify the processes and landforms associated with divergent, convergent, and transform boundaries.
• Explain how boundary transitions can produce complex regional geological patterns.+ Show more

Learning Objectives

• Explain conservation of matter in terms of atoms rearranging in a closed system
• Identify how physical and chemical changes differ while still conserving total mass
• Use evidence from mass measurements to support the claim that total mass stays constant in a closed system

Learning Objectives

• Explain how constraints in engineering and design can affect people and the natural environment
• Identify examples of environmental impacts caused by material choices and construction decisions
• Distinguish technically feasible solutions from socially and environmentally responsible solutions

Learning Objectives

• Explain how design criteria and constraints guide the success of a science/engineering solution.
• Identify examples of measurable criteria and relevant constraints in everyday design problems.
• Use criteria and constraints to evaluate whether a proposed solution is acceptable.

Learning Objectives

• Compare design alternatives using clear criteria and evidence from testing or observations.
• Justify a final design choice by linking each criterion to outcomes and constraints.
• Explain how tradeoffs are managed and how design parameters can be refined when results are not sufficient.

Learning Objectives

• Understand the processes of deposition and how they shape landforms.
• Identify different types of depositional features such as deltas, beaches, and moraines.
• Describe the characteristics of sediments involved in depositional environments.+ Show more

Learning Objectives

• Explain how energy moves through trophic levels in a food chain or food web.
• Describe why only a few trophic levels are typically supported in ecosystems.
• Use energy transfer efficiency to predict how biomass changes across trophic levels.

Learning Objectives

• Understand how agents like water, glaciers, wind, and gravity cause erosion and transport Sediment.
• Describe distinctive sedimentary signatures produced by different erosion agents.
• Interpret landscape features to deduce past environments and erosion history.+ Show more

Learning Objectives

• Explain how living organisms function as interconnected systems with specialized structures
• Describe how body systems process inputs (food, oxygen, water) into forms cells can use
• Use cause-and-effect reasoning to connect structure function to organism survival+ Show more

Learning Objectives

• Explain how tectonic uplift, volcanic construction, and surface processes influence landscape change.
• Analyze the balance between uplift and erosion in shaping landforms over time.
• Describe how climate variations affect weathering and material transport in landscapes.+ Show more

Learning Objectives

• Explain how limited resources affect population survival and reproduction in ecosystems.
• Describe how changes in food, water, space, and shelter influence the size of populations over time.
• Use evidence from an ecosystem to predict how population numbers may change when resources become scarce or abundant.

Learning Objectives

• Describe how magma forms through partial melting due to decompression, volatiles, or heat transfer.
• Explain the processes of cooling and crystallization that determine rock textures and mineral assemblages.
• Identify the roles of fractional crystallization and magma mixing in producing diverse igneous rocks.+ Show more

Learning Objectives

• Explain how predation and competition change access to resources and affect survival and reproduction
• Describe how mutualism can increase persistence of both species through shared benefits
• Connect changes in survival and reproduction rates to population size trends over time

Learning Objectives

• Describe the processes involved in metamorphism and how rocks change mineralogically and texturally.
• Differentiate between contact and regional metamorphism and their effects on rocks.
• Identify mineral assemblages and textures that indicate metamorphic grade and history.+ Show more