Alaska Science
Key Element A5

A student who meets the content standard should understand the strength and effects of forces of nature, including gravity and electromagnetic radiation (Forces of Nature).

Performance Standard Level 1, Ages 5–7

Students show how objects can be moved without being touched, and how shadows are formed by light.

Sample Assessment Ideas

• Students demonstrate that they understand that objects fall to the ground if support is withdrawn.

• Students describe the pushing and pulling forces of magnets on one another and on different objects.

• Students predict the direction and shape of a shadow of an object illuminated from one side by a lamp or by the sun.

Standards Cross-References
( Alaska Department of Education & Early Development Standards)

National Science Education Standards

Light travels in a straight line until it strikes an object. Light can be reflected by a mirror, refracted by a lens, or absorbed by the object. (Page 127)

Electricity in circuits can produce light, heat, sound, and magnetic effects. Electrical circuits require a complete loop through which an electrical current can pass. (Page 127)

Magnets attract and repel each other and certain kinds of other materials. (Page 127)

Benchmarks

The sun warms the land, air and water. (Page 83)

Things near the Earth fall to the ground unless something holds them up. (Page 94)

Magnets can be used to make some things move without being touched. (Page 94)