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Review Activities 3 & 4

Review Activities 3 & 4. Measuring an ellipse. D represents the: L represents the:. Calculating eccentricity. What is the eccentricity of an ellipse with a foci distance of 25 cm and an axis length of 50 cm?. Eccentricity varies from 0 to 1.

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Review Activities 3 & 4

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  1. Review Activities 3 & 4

  2. Measuring an ellipse D represents the: L represents the:

  3. Calculating eccentricity What is the eccentricity of an ellipse with a foci distance of 25 cm and an axis length of 50 cm?

  4. Eccentricity varies from 0 to 1 Draw an ellipse with a very small eccentricity such as the Earth’s orbit. Draw an ellipse with a very large eccentricity such as a comet’s orbit.

  5. Axial tilt How much is the Earth tilted on its axis? What would happen if the tilt were 0 degrees?

  6. Wobble? What motion of the Earth causes the pole to move toward Vega instead of Polaris? What will eventually happen to the seasons?

  7. Seasons When does the northern hemisphere tilt towards the Sun? When is the Earth closest to the Sun?

  8. Kepler’s 3rd Law According to Kepler’s 3rd law what comparison is there between the length of the years on Venus and Neptune?

  9. Kinetic energy What is the formula for kinetic energy? What factors affect the amount of kinetic energy in an object? Which one has a greater effect on KE?

  10. Crater Lab How did you know which objects landing on the sand had the greater KE?

  11. Shooting Stars What is the difference between a meteor, meteroid, and a meteorite?

  12. Impacts What event has about the same energy as an asteroid impact?

  13. Asteroid VS CometWhich is a bigger threat to the Earth? Which has more inclined orbits - why does this affect it? Which has more eccentric orbits – why does this affect it? Which is more distant from the Sun - why does this affect it? Which is denser – why does this affect it?

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