Science - 2019-20

K.8 - Earth and Space Systems: Shadows

The student will investigate and understand that light influences temperature on Earth's surfaces and can cause shadows.  Key ideas include

a)  the sun provides light and warms Earth's surface;

  • make observations and conduct an investigation to determine the effect of sunlight on Earth's surface Bloom's Level:  Understand / Analyze

b)  shadows can be produced when sunlight or artificial light is blocked by an object; and

  • demonstrate how shadows change as the direction of the light source changes. Bloom's Level: Knowledge / Understand
  • describe how shadows occur. Bloom's Level:  Understand
  • identify sources of light that can produce shadowsBloom's Level:  Understand

c)  objects in shadows and objects in sunlight have different temperatures.

  • design and build a simple structure that will reduce the warming effect of sunlight on an area or an object.  Bloom's Level: Create
  • compare the relative temperature of an object in sunlight versus the same object in a shadow.
Adopted: 2018

BIG IDEAS

Repeating patterns in nature, or events that occur together with regularity, are clues to cause and effect relationships.

UNDERSTANDING THE STANDARD

  • A shadow is an image of an object created when light is blocked by that object.
  • Shadows can occur whenever light is present.
  • People can make shadows.
  • Living and nonliving things can make shadows.

ESSENTIALS

Essential Questions:

 What is a shadow?

 How is a shadow produced ?

 Who or what produces shadows?

 How can shadows change?


In order to meet this standard, it is expected that students will

  • recognize that sunlight warms Earth's surface. 
  •  identify a shadow.
  • describe how shadows occur.
  • identify and describe sources of light — sun, electric lights, and flashlights — that can produce shadows.
  • determine that objects in a shadow will be cooler than objects in the sun
  • demonstrate that shadows change as the direction of the light source changes.

KEY VOCABULARY

block - stops or prevents passage of light

electric light - produces light through the flow of electrons; lamps, overhead lights, spotlights, etc.

flashlight - battery operated light

light - allows sight and makes things visible

living things - are composed of cells and require food, water, shelter etc.

non-living things - items which do not require air, water, food and shelter or space to live.

objects- a material that can be seen and touched

shadow - a dark area or shape produced by a body coming between rays of light and a surface

sun- the star around which Earth orbits; produces light andheat


Updated: Jan 13, 2020