'Clear night sky' diaporamas de présentation

Basic Observations of the Night Sky

652 views • 44 slides

ClassAct SRS enabled.

ClassAct SRS enabled. In this presentation you will: Explore the concepts of friction and the coefficient of friction. Friction affects our everyday lives. It can explain why we make some things of particular substances and why they have particular shapes.

368 views • 18 slides

Camera/Video

358 views • 15 slides

Chapter 3

250 views • 11 slides

Northern Lights or Aurora Borealis

Northern Lights or Aurora Borealis . Natural Colored Light Displays. Observed in the cold clear night sky only in the extreme North. When can you see the Northern Lights? . September to October or March to April. Look like paintings in the sky that usually give off a greenish glow.

711 views • 10 slides