Predict the layering and composition of stars other than the Sun.

Deduce what astronomers can tell about how stars of different masses evolve, by observing stars in clusters.

Distinguish between the following pairs of terms.

giant stars, main-sequence stars

Distinguish between the following pairs of terms.

eclipsing binary, spectroscopic binary

Why mass is so important in determining the evolution of a star.

Infer how hydrostatic equilibrium in a star is determined by mass.

Design a model to explain parallax.

Deduce why it is hotter at the center of the Sun than on the surface.

Explain the relationship between the solar prominences and the Sun's magnetic field.

What are two types of oligarchies? theocracy and monarchy dictatorship and theocracy communism and dictatorship theocracy and communism

Central and state governments influence each other in a

a) unitary system.

b) federal system.

c) confederal system.

d) democratic system.

Determine whether the following statements are myths or facts. Rewrite any myths to make them factual statements:
(a) The body builds immunities to certain STDs,
(b) A person could have an STD and not know it.
(c) Having a Pap test is one way a female can find out if she has an STD.
(d) Once the symptoms of an STD go away the disease is cured.

Determine how the lifetimes of stars depend on their masses.

Find the signal energy of each of these signals. (a) $\mathrm{x}(t)=2 \operatorname{rect}(-t)$ (b) $\mathrm{x}(t)=\operatorname{rect}(8 t)$ (c) $\mathrm{x}(t)=3 \operatorname{rect}(t / 4)$ (d) $\mathrm{x}(t)=2 \sin (200 \pi t)$ (e) $\mathrm{x}(t)=\delta(t)$