CTET Science Notes & MCQs:
Moving Things, Natural Phenomena
& Natural Resources
Complete Study Guide for Paper 1 & Paper 2 | Science Content + Pedagogy | 20 Practice MCQs
📋 What's Inside This Article
- Introduction: Science in CTET
- Topic 1: Moving Things, People and Ideas — Electric Circuits & Magnets
- Topic 2: Natural Phenomena — Light, Sound, Earthquakes, Seasons
- Topic 3: Natural Resources — Air, Water, Soil, Conservation
- Science Pedagogy Section
- 20 Important MCQs with Answers
- Quick Revision Notes
- FAQ
Science in CTET — Why It Matters
If you're preparing for the Central Teacher Eligibility Test (CTET), Science is one of the most scoring and conceptually rich subjects you'll encounter. Whether you're appearing for Paper 1 (Classes 1–5) or Paper 2 (Classes 6–8), a strong grasp of science content and its pedagogy is non-negotiable.
The good news? Science is not just about memorizing facts. CTET rewards candidates who understand how concepts work and how to teach them effectively. This article gives you exactly that — a structured, concept-based, exam-oriented guide packed with teaching strategies, MCQs, and quick revision notes.
In Paper 2, Science has 40 content questions + 20 pedagogy questions. Both sections draw from the same topic pool, so understanding content and how to teach it gives you double advantage!
⚡ Moving Things, People and Ideas
This topic covers two fundamental subtopics that appear frequently in both CTET Paper 1 and Paper 2: Electric Circuits and Magnets. These are concept-heavy and very student-friendly if taught with hands-on activities.
A. Electric Current and Circuits
🔋 What is Electric Current?
Electric current is the flow of electric charge (electrons) through a conductor. It is measured in Amperes (A). Just like water flows through a pipe, electricity flows through a wire. The "pressure" that pushes this flow is called Voltage (V), measured in Volts.
A battery does NOT contain electricity — it stores chemical energy and converts it into electrical energy when connected in a circuit. This is why CTET often asks about energy conversion!
🔌 Types of Circuits
| Feature | Series Circuit | Parallel Circuit |
|---|---|---|
| Current Path | Single path | Multiple paths |
| If one bulb fuses | All bulbs go out | Others remain lit |
| Brightness | Dimmer (voltage shared) | Brighter (full voltage) |
| Used in | Old fairy lights, simple devices | Home wiring, switches |
| Switch control | Controls all together | Can control individually |
🔧 Open vs. Closed Circuit
- Closed Circuit: Complete path — current flows, bulb glows ✅
- Open Circuit: Broken path — current stops, bulb doesn't glow ❌
- A switch is a device that opens or closes a circuit
🧪 Conductors and Insulators
⚡ Conductors
Allow electricity to pass through. Examples: Copper, Aluminium, Gold, Silver, Iron, Graphite (pencil lead), Human body, Salt water
🚫 Insulators
Do NOT allow electricity to pass. Examples: Rubber, Plastic, Wood, Glass, Dry air, Pure water, Ebonite, Mica
🛡️ Safety Devices — Fuse
A fuse is a thin wire with low melting point that melts when current exceeds a safe limit, protecting devices from damage. It is always connected in series with the circuit. Modern homes use MCBs (Miniature Circuit Breakers) instead of fuses.
Use the Activity-Based Learning method: Give students a battery, wires, and a bulb to make circuits themselves. This kinesthetic learning helps children understand open/closed circuits far better than diagrams alone. Ask them: "What happens when you remove one wire?" — this encourages inquiry-based thinking.
B. Magnets — Nature's Invisible Force
🧲 Types of Magnets
Bar Magnet
Rectangular shape, most common in classrooms and experiments
Horseshoe Magnet
U-shaped, stronger pull due to both poles facing same direction
Disc/Ring Magnet
Circular shape, used in speakers and electric motors
📌 Key Properties of Magnets
- Like poles repel — N-N or S-S push each other away
- Unlike poles attract — N-S pull towards each other
- A freely suspended magnet always points North-South — principle of magnetic compass
- Magnetic force can act through non-magnetic materials like paper, glass, water
- Every magnet has two poles — poles cannot be separated (cut a magnet → two new magnets form)
| Magnetic Materials | Non-Magnetic Materials |
|---|---|
| Iron, Nickel, Cobalt | Aluminium, Copper, Plastic |
| Steel | Wood, Glass, Rubber |
| Ferromagnetic substances | Paper, Cloth, Air |
🌍 Everyday Uses of Magnets
- Compass needle (navigation)
- Electric motors and generators
- Speakers and headphones
- MRI machines in hospitals
- Magnetic locks and latches
- Credit card magnetic strips
Magnets lose their properties when heated, hammered, or dropped. To preserve magnets, store them in pairs with opposite poles facing and use keepers (iron bars). This is frequently asked in CTET!
🌦️ Natural Phenomena
Natural phenomena are naturally occurring events that can be explained by scientific principles. CTET focuses on helping candidates understand these so they can explain them to young learners through observation, inquiry, and experimentation.
A. Light and Shadows
- Light travels in a straight line (rectilinear propagation)
- A shadow is formed when an opaque object blocks light
- Shadow is always on the opposite side of the light source
- Shape of shadow depends on the angle of light, not the object's color
- Reflection — light bounces off smooth surfaces (mirror)
- Refraction — light bends when passing from one medium to another (straw in water appears bent)
The sky is blue because of Rayleigh scattering — shorter blue wavelengths scatter more than red wavelengths in the atmosphere. At sunset, light travels further through the atmosphere, so only red/orange remains!
Opaque: Wood, metal (blocks all light)
Transparent: Glass, water (allows all light)
Translucent: Frosted glass, oiled paper (allows partial light)
B. Sound and Vibrations
- Sound is produced by vibrations — every sound source vibrates
- Sound travels as a longitudinal wave through a medium (solid, liquid, gas)
- Sound cannot travel in vacuum (that's why there's no sound in space)
- Sound travels fastest in solids, slower in liquids, slowest in gases
- Speed of sound in air ≈ 343 m/s at room temperature
- Echo: Reflection of sound. Needs min. 17 m distance from obstacle
Lightning and thunder occur simultaneously, but we see lightning first because light (3×10⁸ m/s) travels much faster than sound (343 m/s). The gap in seconds × 340 = distance to lightning! This conceptual question is a CTET favorite.
C. Earthquakes
- Earthquakes are caused by sudden movement of tectonic plates
- The point inside Earth where an earthquake originates = Focus/Hypocentre
- The point on Earth's surface directly above focus = Epicentre (most damage here)
- Measured on Richter Scale (0-10). Each unit = 10× more energy
- Seismograph = instrument to detect and measure earthquakes
- Seismic waves are of 3 types: P-waves, S-waves, Surface waves
D. Day & Night, Seasons, and Eclipses
| Phenomenon | Cause | Key Fact |
|---|---|---|
| Day & Night | Earth's rotation on its axis (24 hrs) | Earth rotates West → East |
| Seasons | Earth's revolution around Sun (365¼ days) + axial tilt (23.5°) | India has 6 seasons |
| Solar Eclipse | Moon comes between Earth & Sun | Occurs on New Moon (Amavasya) |
| Lunar Eclipse | Earth comes between Sun & Moon | Occurs on Full Moon (Purnima) |
For eclipses, use a torch + ball + smaller ball activity. Let students physically move the objects and observe shadows. This builds conceptual understanding through doing — a core principle of constructivism which CTET expects you to know and apply.
🌿 Natural Resources
Natural Resources are materials from nature that humans use to meet their needs. CTET deeply values environmental awareness and expects candidates to integrate conservation values into science teaching.
A. Types of Natural Resources
♻️ Renewable Resources
Replenished naturally; do not run out with use. Examples: Solar energy, Wind energy, Water (through water cycle), Air, Wood (if forests are managed)
⛽ Non-Renewable Resources
Formed over millions of years; exhausted when used. Examples: Coal, Petroleum (crude oil), Natural gas — collectively called Fossil Fuels
B. Air, Water and Soil
💨 Air
- Composition: Nitrogen (78%), Oxygen (21%), Argon (0.9%), CO₂ (0.04%), others
- Plants use CO₂ for photosynthesis; animals use O₂ for respiration
- Ozone (O₃) layer protects Earth from harmful UV radiation
- Air pollution: CO, SO₂, NO₂, particulate matter
💧 Water
- Only 2.5% of Earth's water is fresh; only 0.3% is accessible surface water
- Water cycle: Evaporation → Condensation → Precipitation → Collection
- Groundwater: stored in aquifers — recharged by rainwater percolation
- Water conservation methods: Rainwater harvesting, drip irrigation, check dams
🌱 Soil
- Soil is formed by weathering of rocks over thousands of years
- Layers of soil (horizons): Topsoil (A) → Subsoil (B) → Rock layer (C) → Bedrock (R)
- Types: Sandy (dry, loose), Clayey (holds water), Loamy (best for farming)
- Soil erosion is prevented by: Planting trees, Terracing, Contour farming
C. Forests and Wildlife
- Forests are called "Green Lungs of the Earth"
- Benefits: Oxygen, rainfall, temperature regulation, habitat, medicines, timber
- Threats: Deforestation, forest fires, encroachment, poaching
- Social Forestry: Growing trees on community lands for social benefit
- Chipko Movement (1973): Women hugged trees to prevent logging — a landmark example for CTET
D. The 3Rs — Reduce, Reuse, Recycle
Reduce
Use less. Turn off lights, use less water, avoid single-use plastic
Reuse
Use items again. Cloth bags instead of plastic, refillable bottles
Recycle
Convert waste into new products. Recycling paper saves trees
Sustainable Development = "Meeting present needs without compromising the ability of future generations to meet their own needs" (Brundtland Commission, 1987). This definition is directly quoted in CTET questions!
🎓 How to Teach Science Effectively — CTET Pedagogy
The pedagogy section of CTET Science assesses whether you can teach science, not just know it. Here are the key approaches every CTET aspirant must master:
Core Teaching Methods in Science
Experimentation Method
Students conduct experiments themselves. Develops scientific temperament and problem-solving.
Observation Method
Students carefully observe natural phenomena and record findings. Promotes curiosity.
Inquiry-Based Learning
Students ask questions and find answers through investigation. Teacher is a guide, not giver.
Constructivism
Learners build new knowledge on prior knowledge. Piaget & Vygotsky-based approach.
Problem-Solving Method
Present real-world problems. Students apply concepts to find solutions. Develops critical thinking.
Activity-Based Learning
"Learning by doing" — kinesthetic approach. Most effective for primary students.
Bloom's Taxonomy in Science Education
| Level | Skill | Science Example |
|---|---|---|
| 1. Remember | Recall facts | Name the parts of a circuit |
| 2. Understand | Explain concepts | Explain why the bulb glows |
| 3. Apply | Use knowledge | Connect a series circuit correctly |
| 4. Analyze | Break down information | Compare series and parallel circuits |
| 5. Evaluate | Make judgments | Decide which circuit is safer for home wiring |
| 6. Create | Produce new ideas | Design a model of a safe electrical circuit |
Common Misconceptions in Science (CTET Focus)
- Students think shadows are black objects, not absence of light
- Children believe sound travels fastest in air (it actually travels fastest in solids)
- Students confuse mass and weight — mass doesn't change, weight does (due to gravity)
- Many think cutting a magnet destroys its magnetic property — it actually creates two new magnets
- Children believe the Sun is closest to Earth in summer — actually Earth's tilt causes seasons
NCF 2005 emphasizes: Child-centered education, learning by doing, connecting learning to life. NEP 2020 stresses: Competency-based education, reduced curriculum load, emphasis on critical thinking. Science teaching should make students "question, investigate, and discover" rather than just memorize.
✅ 20 Important CTET Science MCQs
These MCQs are designed to match the actual CTET pattern — mix of easy, moderate, conceptual, application-based, and pedagogy questions. Click "Show Answer" after attempting each one.
⚡ Quick Revision Notes
One-line definitions and key facts for last-minute CTET revision:
❓ Frequently Asked Questions
🚀 You've Got This, CTET Aspirant!
Science in CTET is not about cramming — it's about understanding concepts and knowing how to make them come alive for young learners. Every topic you've studied today — from electric circuits to natural resources — connects to the real world and to the classroom.
Remember: A good teacher is first a good learner. Keep your curiosity alive, stay consistent, and success in CTET will follow. All the best! 🌟
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