Expanding Universe
The Universe is expanding uniformly, with galaxies moving away from each other. Students will construct explanations based on astronomical data, demonstrating how the Universe's expansion supports the Big Bang theory and analyzing changes in the expansion rate over time. NGSS Lesson duration: 1.5 hours.
Related resources
- Quiz: Exploring Galactic Distances and Expansion of the Universe
- Video: Hoberman Sphere Expanding Slowly
- Video: Hoberman Sphere Guided
- Video: The Expanding Universe with Keith Bechtol
- Worksheet: Expanding Universe Summative Assessment
- Pretest: Exploring Galactic Distances and Expansion of the Universe
Topics
- ESS1.A
- The Universe and Its Stars
- HS-ESS1-2
- Hubble's Law
- cosmological redshift
- redshift
- distance ladder
- Big Bang theory
- cosmological principle
- dark energy
- lookback time
- galaxies
- history of astronomy
- standard candles
- universe size
- expansion rate
- galaxy
- supernovae
- astrophysics