[A] An aluminum rod 15 cm in length is heated from 10 degrees Celsius to 50 degrees Celcius. Find the change in length?

1. 15 cm
2. 8 cm
3. 6 cm
4. None of the above.

[B] In order to completely melt a material,

1.  Heat must be added to bring the material to the melting temperature and then the latent heat of fusion must be added  to change the phase.
2.  Heat must be added to make the object expand to the melting volume
3.  No heat needs to be added.
4.  Stir while adding heat.

[C] What is Kepler’s first law of planetary orbits?

1. The planets move on ellipses with the Sun at the center of the ellipse.
2. The planets revolve around the Earth.
3. The position of the planets foretells the future.
4. The planets move on ellipses with the Sun at one of the foci.