Light and Heat 5th Grade

Presentation

Light and Heat

Natural Sciences 5th Grade

Sergio Ruano París

INDEX

Light Sources

What is Light?

Features of Light

Colours

Materials and Light

Properties of Light

Effects of Heat

Types of Materials

What is Heat?

10

Review

12

Video 1

Video 2

11

WHAT IS LIGHT?

Let's learn about Light! Are you ready?

LIGHT is a form of energy.

Light allows us to see objects and observe their shape and size.

LIGHT SOURCES

NATURAL SOURCES

ARTIFICIAL SOURCES

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CHARACTERISTICS OF LIGHT

• It is the fastest form of energy. It travels at 300,000 km/s.
• Light travels in straight lines. When it hits an object, light can be absorbed, reflected or refracted.
• Light looks white, but it is made up of the seven colours.

LIGHT and MATERIALS

TRANSLUCENT

OPAQUE

TRANSPARENT

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COLOURS

Sunlight is an example of white light. This is light made up of seven colours.

Click on the picture to see what happens when white light passes a transparent prism.

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PROPERTIES OF LIGHT

• Reflection happens when light hits an object and bounces back.

• Refraction occurs when light changes direction as it passes from one substance to another.

PROPERTIES OF LIGHT

REFLECTION

REFRACTION

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LIGHT SOURCES

LENSES

MIRRORS

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VIDEO

Watch the video in order to review what we have studied about light.

WHAT IS HEAT?

Let's learn about Heat! Are you ready?

HEAT is a form of energy.

Thermal energy flows from a warm substance to a cooler substance.

PROPERTIES OF MATERIALS

THERMAL INSULATOR

THERMAL CONDUCTOR

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EFFECTS OF HEAT

EVAPORATION

EXPANSION

MELTING

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VIDEO

Watch the video in order to review what we have studied about heat.

THANK YOU!

Sergio Ruano París