A solar eclipse happens when the moon is infront of the sun as seen from a location on earth
Lava is seen to have a "glittering"effect due to its natural composition: literally minerals. Depending on the rock that has been melted into this mixture, lava or magma can have varying effects applied to it's appearance, density, and the temperature it cools at.
Anything that sounds like a name, city, month, etc. gets capitalized... So for example the first sentence would be...
Early in April, Paula and Harry Jones left on their trip.
Hope this helps!