Grade 7 Science Worksheets

Learning Objectives

• Explain net force as the vector sum of forces, including direction.
• Use words and simple sign conventions to predict the direction of motion.
• Identify when forces are balanced and when an object’s motion changes.

Learning Objectives

• Identify how inertia affects whether an object’s motion changes quickly or slowly.
• Describe how mass can make changes in motion harder to notice.
• Explain inertia using everyday examples from the passage.

Learning Objectives

• Define speed and explain what it measures in everyday motion.
• Distinguish average speed from instantaneous rate using a motion description.
• Use unit ideas (m/s and km/h) to support correct thinking about speed.

Learning Objectives

• Define mechanical advantage and explain how it relates force input and force output
• Identify the purpose of simple machines in everyday situations
• Use a basic mechanical advantage equation with given forces

Learning Objectives

• Explain the particle model using the ideas of discrete particles, spaces between particles, and constant motion
• Use particle arrangements and motion to predict observable physical properties of materials
• Connect the microscopic particle model to real-world examples such as evaporation and condensation

Learning Objectives

• Explain what makes a pure substance uniform in composition and properties
• Distinguish elements from compounds using physical and chemical tests
• Identify how impurities or multiple substances change observed test results

Learning Objectives

• Explain the purpose of ecosystem models.
• Identify key details about conceptual and quantitative modelling.
• Describe model inputs, assumptions, and limitations.+ Show more

Learning Objectives

• Identify kinetic and potential energy in everyday situations.
• Explain how changes in height and speed affect mechanical energy.
• Use energy conservation ideas to reason about safer motion and loading.

Learning Objectives

• Define conservation status using details from the passage
• Identify how threats, population trends, and recovery potential shape risk levels
• Explain how habitat change, genetic diversity, and connectivity affect species vulnerability

Learning Objectives

• Identify the main idea of how wetlands help manage water across a landscape
• Describe hydrological functions of wetlands using supporting details from the passage
• Explain how wetland water storage can reduce flooding after heavy rainfall

Learning Objectives

• Identify material properties such as strength, stiffness, density, and environmental resilience
• Explain how compression, tension, and bending affect long-term performance of common materials
• Use evidence from a passage to support maintenance and design choices in cold, snowy climates

Learning Objectives

• Identify parts of a mixture in oil sands using physical properties.
• Distinguish physical separation steps from chemical changes during processing.
• Explain how density, particle size, temperature, and additives affect mixture behavior.

Learning Objectives

• Explain how mass conservation applies to closed systems and reactors.
• Interpret a mass budget by comparing expected and measured masses.
• Identify where mass can appear or disappear in conservation accounting.

Learning Objectives

• Define biodiversity, species richness, species evenness, and habitat heterogeneity from a scientific text
• Interpret what biodiversity indices can reveal about ecosystem health
• Choose the best biodiversity index to match a description

Learning Objectives

• Identify the main idea and key details about oral histories as ecological records
• Explain how place-based knowledge helps interpret ecological relationships and seasonal cycles
• Describe how stewardship practices connect human choices to long-term environmental patterns

Learning Objectives

• Explain how nutrient runoff, hydrocarbons, and airborne deposition can enter ecosystems
• Describe cause-and-effect links between pollution sources and ecological effects
• Use terms such as bioaccumulation, food web, and exposure to interpret environmental impacts

Learning Objectives

• Define net force and equilibrium using key vocabulary from a text.
• Distinguish static equilibrium from dynamic equilibrium in simple situations.
• Explain how balanced force pairs affect motion using qualitative reasoning.

Learning Objectives

• Identify biotic and abiotic factors in an ecosystem
• Explain cause-and-effect relationships between abiotic conditions and resource availability
• Describe how sunlight, soil, water, temperature, and topography influence living things

Learning Objectives

• Identify how distance changes over time on a distance–time graph
• Interpret whether motion speeds up, slows down, or stays constant by reading slope
• Use graph features to explain meaning of increasing, flattening, and decreasing sections

Learning Objectives

• Identify evidence that a chemical change has occurred based on observable observations.
• Distinguish chemical changes from physical changes using particle-level reasoning.
• Explain how bond changes and energy transfer lead to new substances.

Learning Objectives

• Explain the cause-and-effect chain in convection using temperature, density, and fluid motion
• Identify natural convection patterns in air based on density differences
• Use convection vocabulary (buoyancy, boundary layer, density) to describe heat transfer

Learning Objectives

• Identify common SI units used to measure distance and time
• Use unit names correctly when describing motion
• Recognize that speed is distance divided by time

Learning Objectives

• Extract key numbers and energy terms from an energy-budget text.
• Identify how conduction, convection, and radiation move energy in a passive solar house.
• Use conservation of energy ideas to interpret net heat gain and losses.

Learning Objectives

• Define solution concentration and identify key vocabulary in context.
• Explain how mass percent and grams per litre describe concentration.
• Use concentration ideas to predict how dilution changes a solution.

Learning Objectives

• Identify key ideas about thermal conductivity and specific heat capacity from a science text
• Use evidence from a text to explain how material properties affect heat flow
• Compare material choices using vocabulary such as density, porosity, and phase change

Learning Objectives

• Explain how temperature change relates to energy transfer in heating and cooling
• Use energy units (J and kJ) and temperature scales to describe thermal processes
• Identify key variables in heat calculations: specific heat, mass, and temperature change

Learning Objectives

• Explain the purpose of filtration in separating mixtures
• Identify how particle size affects which materials pass through a filter
• Use physical property clues to predict filter results

Learning Objectives

• Explain how radiant transfer moves energy using electromagnetic waves
• Identify factors that affect net radiative heating
• Use emissivity and absorptivity ideas to predict heating and cooling patterns

Learning Objectives

• Define saturation and solubility in terms of dissolved solute at a given temperature and pressure
• Explain what happens when more solute is added after a solution becomes saturated
• Describe supersaturation and why it can lead to sudden precipitation

Learning Objectives

• Explain the main idea of conduction in solids
• Describe how particle motion transfers kinetic energy during conduction
• Use key vocabulary (kinetic energy, particles, conductivity, interface) to answer questions about heat flow+ Show more

Learning Objectives

• Explain how birth and death rates change population size using cause-and-effect.
• Identify how resource availability and abiotic constraints can increase deaths or limit births.
• Use measurement of population trends to describe whether a population is growing, shrinking, or fluctuating.

Learning Objectives

• Explain temperature as related to average random kinetic energy of particles.
• Use evidence from a text to describe how particle motion connects to thermal energy and pressure.
• Distinguish how different factors (particle number and phase) can change thermal energy even when particles move randomly.

Learning Objectives

• Explain how load paths help structures resist forces.
• Identify the roles of compression, tension, and shear in common structures.
• Use material properties such as stiffness, strength, and durability to judge safety.

Learning Objectives

• Explain conservation of mass in a sealed system using cause-and-effect language.
• Identify how inputs and outputs relate to total mass in a closed container.
• Use mass accounting ideas to predict what should happen to product mass when no matter can enter or leave.

Learning Objectives

• Explain how solar energy drives seasonal change.
• Use vocabulary such as albedo, sensible heat, and latent heat in context.
• Describe how phase changes and snow cover affect energy budgets.+ Show more

Learning Objectives

• Define solubility using simple scientific language
• Identify factors that affect how much solute dissolves
• Explain how temperature and surface area can change the amount dissolved

Learning Objectives

• Identify key variables in a calorimetry situation (mass, temperature change, and specific heat) and explain what each one means
• Relate rising or falling temperature to heat absorbed or released in a calorimetry setup

Learning Objectives

• Define temperature as a measure of average kinetic energy of particles
• Explain heat as energy transfer due to a temperature difference
• Describe heat transfer by conduction, convection, and radiation

Learning Objectives

• Identify how building orientation changes solar heat entering a home.
• Explain what passive solar gains are and how they affect seasonal heating needs.
• Describe trade-offs between comfort and energy demand in cold climates.

Learning Objectives

• Distinguish mutualism, commensalism, and parasitism using defining evidence
• Explain how symbiotic relationships can change population size and resource use
• Use an example to describe a likely ecological consequence of each symbiosis type

Learning Objectives

• Identify observable indicators that suggest a chemical reaction has occurred.
• Describe how evidence such as gas, heat change, color change, and precipitate formation can be used to interpret reactions.
• Use accurate scientific language to explain reaction clues.

Learning Objectives

• Define specific heat capacity using the idea of energy per unit mass per degree Celsius
• Identify how temperature change depends on mass and specific heat capacity
• Use correct units for thermal energy calculations and explanations

Learning Objectives

• Identify what producers are and why they are the starting point for energy flow in food webs.
• Explain how consumers and decomposers connect to producers through feeding relationships.
• Describe how removing or adding a species can change trophic connections in an ecosystem.

Learning Objectives

• Identify signs of a physical change from a text
• Explain how melting and freezing can be reversible
• Connect particle behavior to changes in observable properties

Learning Objectives

• Explain how evaporation and controlled cooling lead to nucleation and crystal growth.
• Describe how evaporation rate, cooling profile, and impurities affect crystal size and purity.
• Relate recrystallization to improved purity using well-ordered crystal lattices.

Learning Objectives

• Explain how ecological succession changes a community after disturbance
• Distinguish primary and secondary succession and identify common stages
• Describe drivers of succession, including soil development, seed dispersal, competition, and facilitation

Learning Objectives

• Identify and classify structural, physiological, and behavioral adaptations in organisms.
• Explain how selective pressures (temperature, moisture, predation, and resource availability) can shape adaptations.
• Analyze how adaptation trade-offs can influence where species can survive and function.

Learning Objectives

• Summarize how human activities can alter ecosystems, including habitat loss, pollution, resource extraction, and invasive species.
• Explain how these impacts can change species composition, disrupt ecosystem functions, and reduce long-term resilience.
• Describe stewardship principles such as mitigation, habitat protection, restoration priorities, and evidence-based monitoring.