Grade 9 Science Worksheets

Learning Objectives

• Identify common observable properties of substances and describe what they reveal about matter.
• Classify samples using observable traits such as colour, hardness, conductivity, density, and solubility.
• Explain how observable properties can support practical decisions in everyday and industrial contexts.

Learning Objectives

• Define tectonic plates and identify their main types.
• Explain how tectonic plates move relative to each other.
• Recognize the different types of plate boundaries and their features.+ Show more

Learning Objectives

• Understand the structure of evidence-based reasoning.
• Identify links between observations, analyses, and explanations.
• Recognize standards for evaluating evidence, including sufficiency and consistency.+ Show more

Learning Objectives

• Understand how the Moon's position affects its visible phases from Earth.
• Identify the conditions necessary for solar and lunar eclipses to occur.
• Explain the role of the Moon's orbital tilt in eclipse frequency.+ Show more

Learning Objectives

• Describe the processes involved in cellular energy metabolism, including glycolysis, the citric acid cycle, and oxidative phosphorylation.
• Understand how mitochondrial structure supports ATP synthesis and proton gradients.
• Differentiate between aerobic and anaerobic pathways and their tissue-specific roles.+ Show more

Learning Objectives

• Extract key ideas about how DNA sequences can indicate shared ancestry.
• Identify evidence from sequence similarity and divergence in a scientific passage.
• Use scientific vocabulary related to homologous genes and molecular clocks.

Learning Objectives

• Understand key genetic technologies such as selective breeding, hybridization, genetic modification, and gene editing
• Recognize how these technologies are applied in agriculture and livestock
• Learn about the mechanisms of trait introduction and alteration at molecular and population levels+ Show more

Learning Objectives

• Explain how insulin and glucagon respond to changes in blood glucose.
• Describe how the liver, muscle, and adipose tissue help maintain blood glucose homeostasis.
• Compare how feeding and fasting affect glucose uptake, storage, and release.

Learning Objectives

• Explain how homeostatic feedback loops maintain internal stability using sensors, control centers, and effectors.
• Differentiate negative feedback from positive feedback and predict their overall effects on a body variable.
• Describe how signaling pathways and transport processes help transmit information and coordinate responses across tissues.

Learning Objectives

• Define inertia and explain its relationship to an object's mass.
• Describe real-world examples demonstrating inertia in everyday life.
• Understand how forces overcome inertia to change an object's motion.+ Show more

Learning Objectives

• Interpret how temperature, humidity, dew point, wind, and air pressure relate to observable weather patterns.
• Use short-term variability and long-term averages to distinguish typical weather from climate change.
• Analyze how air mass movement and energy exchange near Earth’s surface influence precipitation timing and storm intensity.

Learning Objectives

• Explain how hormones help maintain homeostasis using negative feedback loops.
• Describe how insulin and glucagon regulate glucose homeostasis in different tissues.
• Analyze how thyroid hormones affect metabolic rate through receptor-mediated gene expression changes.+ Show more

Learning Objectives

• Identify how electrons are arranged in atoms
• Understand valence electrons and their role in chemical bonding
• Learn the order in which electron shells fill+ Show more

Learning Objectives

• Understand the different passive transport mechanisms crossing cell membranes
• Distinguish between diffusion, facilitated diffusion, and osmosis
• Explain how molecules move along concentration gradients

Learning Objectives

• Explain how Earth’s rotation causes apparent diurnal motion of celestial objects.
• Explain how Earth’s revolution causes apparent seasonal motion and changing visibility of stars.
• Use celestial coordinate ideas to describe rising/setting and interpret altitude and azimuth.

Learning Objectives

• Describe the coordination between heart and lung functions in oxygen delivery
• Explain how chemoreceptor feedback influences respiratory and circulatory adjustments
• Identify the roles of pulmonary ventilation and cardiovascular transport in maintaining homeostasis+ Show more

Learning Objectives

• Understand how to interpret symptoms and measurement data to diagnose electrical faults.
• Identify likely failure modes such as open circuits, short circuits, and component degradation.
• Apply logical inference based on circuit topology and signal analysis to determine causes.+ Show more

Learning Objectives

• Understand how carbon moves through Earth's systems
• Identify key processes involved in the carbon cycle
• Recognize the significance of the carbon cycle for life and climate

Learning Objectives

• Explain how computational simulations use hypothesized mechanisms to generate predictions from model parameters
• Describe how parameter sensitivity and scenario comparisons affect simulation outcomes
• Interpret ensembles and visualizations as representations of uncertainty+ Show more

Learning Objectives

• Explain how observed velocity depends on the chosen frame of reference.
• Use vector addition to determine a relative velocity between two moving objects.
• Interpret how different frames can change calculated displacement, speed, and apparent acceleration.

Learning Objectives

• Use conservation of mass and atom rearrangement to predict likely products of chemical reactions
• Identify common reaction types (synthesis, decomposition, neutralization) and their typical outcomes
• Apply balancing and bonding patterns to justify predicted chemical products

Learning Objectives

• Define biogeochemical cycles and identify the main Earth system reservoirs they involve.
• Explain how fluxes such as photosynthesis, decomposition, nitrogen fixation, and weathering move matter.
• Describe how reservoir size and cycle rate can affect ecosystem responses to change.

Learning Objectives

• Explain how fossil records preserve past life through different types of evidence.
• Identify how evidence from fossils supports claims about the timing of change in Earth’s history.
• Describe at least one factor that can limit what the fossil record shows.

Learning Objectives

• Recognize the concept of iteration in the design process
• Understand how test evidence guides design improvements
• Identify examples of refining a product through repeated testing+ Show more

Learning Objectives

• Understand how air pollutants influence cellular health
• Identify major types of air pollutants and their sources
• Learn the biological mechanisms by which air pollution can cause cellular and health effects+ Show more

Learning Objectives

• Understand key concepts related to Science
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Identify the main function of the nucleus and ribosomes in eukaryotic cells.
• Use passage details to explain how genetic information leads to protein assembly.
• Connect structure (nucleus, ribosome) to function (gene storage, protein building).

Learning Objectives

• Explain how organs are built from multiple tissue types to perform specific functions
• Describe how organ systems connect to support body processes such as gas exchange and nutrient transport
• Compare structural features of organs with how those structures help organisms function

Learning Objectives

• Understand how potential energy stored in water can be transformed into kinetic and electrical energy.
• Explain the energy transfer process in hydroelectric dams.
• Describe how gravitational potential energy converts to kinetic energy in falling water and skiers.+ Show more

Learning Objectives

• Explain how carbon records from ice cores, marine sediments, and terrestrial proxies preserve evidence of past atmospheric composition and climate.
• Describe how isotopes, gas ratios, and carbon flux information can be used to identify seasonal cycles, abrupt shifts, and long-term trends.
• Compare natural variability shown in proxy records with recent anthropogenic increases using concepts of timing and magnitude.

Learning Objectives

• Understand the concept of iteration and how it is used to refine solutions.
• Identify the design cycle steps related to testing and improvement.
• Explain how reliability and safety margins increase through iterative testing.+ Show more

Learning Objectives

• Describe how observable properties can be used to identify and classify substances
• Differentiate between physical properties and changes that require chemical evidence
• Use vocabulary (e.g., colour, hardness, solubility, density, conductivity) to explain material behavior

Learning Objectives

• Explain how balanced and unbalanced forces affect an object’s motion and velocity.
• Use the idea of net force to predict changes in speed and direction.
• Relate the direction of net force to the direction of resulting acceleration.

Learning Objectives

• Understand the process of fertilization in animals and plants.
• Differentiate between internal and external fertilization strategies.
• Identify factors influencing successful development in various habitats.+ Show more

Learning Objectives

• Explain the conservation of mass principle for closed chemical systems
• Use atom conservation to interpret and predict mass changes in gas and combustion scenarios
• Apply mass conservation to account for reactants and products using balanced particle ideas

Learning Objectives

• Use quantitative measurements and model predictions to evaluate claims about motion, forces, energy transfer, or wave behavior.
• Identify how models summarize patterns and state the assumptions or constraints behind them.
• Compare competing explanations by how well they match data and follow expected relationships.

Learning Objectives

• Identify key variables in constant-acceleration motion equations
• Understand basic formulas relating displacement, velocity, acceleration, and time
• Apply motion equations to real-world scenarios such as vehicle stopping distances and free fall+ Show more

Learning Objectives

• Define electric current as the rate of charge flow and distinguish it from charge itself
• Use unit knowledge (amperes) to interpret typical current magnitudes in simple contexts
• Connect changes in current to changes in how fast charge moves through a circuit

Learning Objectives

• Explain how kinetic and potential energy can change within mechanical systems.
• Describe energy transfers due to work, collisions, and friction, and predict how motion changes.
• Use conservation of energy ideas to account for where mechanical energy goes when heat is produced.+ Show more

Learning Objectives

• Describe how energy moves through ecosystems from producers to consumers and decomposers.
• Explain the concept of energy transfer inefficiency and its impact on food chain length.
• Identify the roles of producers, herbivores, carnivores, and decomposers in an ecosystem.+ Show more

Learning Objectives

• Understand the principles of scaling laws and how they relate to real-world models.
• Explain the concept of dimensional similarity and its importance in scientific modeling.
• Apply proportional reasoning to interpret data across different spatial and temporal scales.+ Show more

Learning Objectives

• Compare prokaryotic and eukaryotic cell structures, including organelles and chromosomes.
• Explain how the presence or absence of membrane-bound organelles affects cell functions.
• Use structural differences to predict differences in size, complexity, and metabolic capabilities.

Learning Objectives

• Understand the factors that influence the speed of chemical reactions.
• Identify how temperature, concentration, and catalysts affect reaction rates.
• Describe the concepts of rate laws, reaction order, and activation energy.+ Show more

Learning Objectives

• Describe how to relate acceleration to velocity-time graphs for braking scenarios.
• Use net-force reasoning to connect forces to changes in motion.
• Apply the work-energy idea to predict how stopping distance changes with slope and friction.

Learning Objectives

• Understand how insulin and glucagon regulate blood glucose levels.
• Describe the role of pancreatic hormones in metabolic homeostasis.
• Explain the interplay between liver, muscle, and adipose tissues in glucose regulation.+ Show more

Learning Objectives

• Explain how Earth's axial tilt and orbital eccentricity influence seasons and climate patterns.
• Describe the lunar phases and their predictable cycle.
• Understand how gravitational forces between Earth, Moon, and Sun create tides.+ Show more

Learning Objectives

• Identify different lines of evidence supporting evolutionary history.
• Understand how fossil, anatomical, and molecular evidence contribute to the study of evolution.
• Analyze how multiple evidence types reinforce scientific conclusions about population changes over time.

Learning Objectives

• Define electric current, voltage, and resistance using correct SI units and symbols
• Compare typical magnitudes of current, voltage, and resistance in household and farm equipment contexts
• Use relationships between voltage, current, and resistance to interpret measurements and select appropriate components