Make observations to determine the effect of sunlight on Earth’s surface

Standards Alignment

• K-PS3-1 primary
  Make observations to determine the effect of sunlight on Earth’s surface.

Lesson Overview

This kindergarten science lesson engages students in making observations to understand how sunlight affects different parts of Earth's surface such as sand, soil, rocks, and water. Students will ask questions, use simple tools, conduct safe investigations, collect and record data, and develop explanations based on their observations. The lesson integrates NGSS and TEKS standards focusing on Earth and space science, particularly weather and climate.

Learning Objectives

• Make observations to determine how sunlight changes the temperature or appearance of Earth's surface materials like sand, soil, rocks, and water.
• Ask questions and define problems based on observations related to sunlight and Earth's surface.
• Use simple tools and scientific practices to conduct safe investigations about sunlight's effect.
• Collect and record observations and measurements as evidence using pictures, words, or simple graphs.
• Develop and communicate explanations about how sunlight warms Earth's surface based on collected data.

Success Criteria

• Students can observe and describe changes in temperature or appearance of different Earth surface materials when exposed to sunlight.
• Students ask relevant questions about how sunlight affects materials on Earth.
• Students safely use tools such as thermometers, flashlights, and observation notebooks during investigations.
• Students collect and organize data using drawings, words, or simple charts.
• Students explain how sunlight causes warming of Earth's surface using their observations and data.

Prerequisite Knowledge

Students should understand that sunlight is a form of light and that it can make things warmer. They should be familiar with basic observation skills and using simple tools like thermometers or flashlights under teacher guidance.

Key Vocabulary

• Sunlight
• Earth's surface
• Observation
• Temperature
• Warm
• Cool
• Investigation
• Data
• Model
• Tool

Materials and Resources

• Samples of sand, soil, rocks, and water in clear containers
• Thermometers suitable for classroom use
• Flashlights
• Observation notebooks or recording sheets
• Pencils or crayons
• Transparent and opaque objects
• Simple Sun-Moon-Earth model (optional)

Teacher Preparation

• Prepare sample containers with sand, soil, rocks, and water.
• Gather thermometers and flashlights for student use.
• Prepare observation sheets with space for drawings and words.
• Review safety procedures for handling materials and tools.
• Set up a safe area where sunlight can reach the samples or use a lamp to simulate sunlight.
• Prepare guiding questions to encourage student inquiry.

Detailed Lesson Notes

Understanding Sunlight and Earth's Surface

Sunlight is a form of energy that travels from the Sun to Earth. When sunlight reaches Earth's surface, it can warm different materials such as sand, soil, rocks, and water. These materials absorb sunlight differently, which causes them to warm up at different rates. For example, sand may feel warmer than water after being in the sun because it absorbs and holds heat differently.

Making Observations to Explore Effects of Sunlight

Observations involve using our senses and tools to notice details about objects or events. In this lesson, students will observe how sunlight changes the temperature or appearance of Earth materials. They can touch (carefully), look, and use thermometers to measure temperature changes. Observations should be recorded using pictures, words, or simple graphs to show what happens over time.

Scientific Practices and Safe Investigations

Students will ask questions such as 'Which material gets warmer in the sunlight?' and 'How does sunlight change the materials?' They will plan and carry out simple investigations by placing samples in sunlight and measuring temperature changes. Safety is important: students should handle tools carefully, avoid direct eye exposure to bright light, and follow teacher instructions.

Using Tools to Observe and Measure

Tools like thermometers help measure temperature changes, while flashlights can simulate sunlight if natural sunlight is unavailable. Observation notebooks allow students to record what they see and measure. Transparent and opaque objects can be used to explore how sunlight passes through or is blocked, creating shadows or affecting warming.

Developing Explanations and Models

Based on observations and data, students can explain that sunlight warms Earth's surface and that different materials warm differently. They can create simple models or drawings to represent how sunlight hits Earth and causes warming. This helps them understand cause-and-effect relationships and patterns in nature.

Worked Examples

Classroom Activity

Students observe the samples, measure temperatures, and record their observations using drawings or words in their notebooks.

Guided Practice

Independent Practice

1. Foundational: What do you feel when sunlight shines on your skin?
2. Developing: Name two materials you can find on Earth's surface that sunlight can warm.
3. Application: If you put a rock and a bowl of water in the sun, which one do you think will get warmer faster? Why?
4. Analysis: You notice that a shaded area feels cooler than an area in direct sunlight. Explain why this happens.
5. Challenge: How can you use what you learned about sunlight and warming to design something that keeps you cool on a sunny day?

Independent Practice Teacher Answer Key

1. 1. You feel warmth because sunlight carries energy that warms your skin.
2. 2. Sand and soil are two materials on Earth's surface that sunlight can warm.
3. 3. The rock will get warmer faster because it absorbs sunlight and heat more quickly than water.
4. 4. The shaded area is cooler because the sunlight is blocked, so less light and heat reach that area compared to the area in direct sunlight.
5. 5. You can design something like an umbrella or canopy that blocks sunlight, creating shade to keep you cooler by preventing sunlight from warming the area.

Guiding Questions

• What do you notice when sunlight shines on different materials?
• How can we tell if something is warmer or cooler?
• Why do you think sunlight makes some things warmer?
• What happens when light is blocked?
• How can we show what we learned about sunlight and warming?

Common Misconceptions

• Sunlight only makes things bright but does not make them warmer.
• All materials warm up the same way when sunlight shines on them.
• Shadows are caused by darkness, not by light being blocked.
• Temperature changes can only be measured with numbers, not by feeling warmth or coolness.
• Sunlight is the same everywhere on Earth all the time.

Differentiation

Assessment

• Observe students during investigations to check if they can measure and record temperature changes.
• Ask students to explain how sunlight affects different materials.
• Review students' observation notebooks for completeness and accuracy.
• Draw a picture showing how sunlight warms one Earth material and write one sentence about it.
• Answer: Sunlight warms the sand and makes it feel warm.
• Have students design a simple shade structure that blocks sunlight and explain how it helps keep things cool.
• Conduct a class discussion where students share what they learned about sunlight and warming.

Answer Guide

• What does sunlight do to Earth's surface materials like sand and water?
  Answer: Sunlight warms Earth's surface materials, but different materials warm up at different rates.
• Why is it important to use tools like thermometers during investigations?
  Answer: Thermometers help measure temperature changes accurately, providing evidence for observations.
• What causes shadows to form?
  Answer: Shadows form when sunlight is blocked by an object, preventing light from reaching the area behind it.
• How can you tell if something is warmer or cooler without a thermometer?
  Answer: You can feel the temperature with your hand or notice changes in appearance, like steam or condensation.
• Why do we record observations using pictures and words?
  Answer: Recording observations helps us remember and share what we learned and supports explanations with evidence.

Real-Life Application

Encourage families to observe sunlight effects at home by feeling different surfaces outside and discussing which get warmer and why. Students can share their findings in class.

Homework or Home Connection

• Encourage families to observe sunlight effects at home by feeling different surfaces outside and discussing which get warmer and why. Students can share their findings in class.

Lesson Summary

In this lesson, students learned that sunlight carries energy that warms Earth's surface. Different materials like sand, soil, rocks, and water absorb sunlight differently, causing them to warm at different rates. Through safe investigations using tools like thermometers and flashlights, students made observations, recorded data, and developed explanations about how sunlight affects Earth's surface. They also explored how light can be blocked to create shadows, which are cooler areas. This understanding helps students see cause-and-effect relationships in nature and prepares them for further study of weather and climate.

Teacher Notes

Use the exact standards alignment and retrieved-source provenance stored with this enrichment.

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