Earth Science Astronomy Test

People who see a partial solar eclipse are located in the ___portion of the Moon's shadow.

This is the section of the H-R diagram into which about 90% of stars fall?

The eccentric orbit of __ is 50 AU from the Sun at aphelion and 30 AU at perihelion.

The ____ of a star determines its temperature, luminosity, and diameter.

What is a cloud type that is low, warm, dark-colored, and sinking?

The main sequence lifetime of a low mass star is ______ the lifetime of the Sun.

NASA technologies that have been passed on to commercial industries for common usage is called?

Electric and magnetic disturbances , or waves, that travel through space is called?

The apparent shift in a star's position caused by the motion of the observer is called ___.

Bodies of interplanetary debris that orbit the Sun in the area between Mars and Jupiter?

Recent observations show that the rate of expansion of the universe is____.

Process of linking many separate telescopes together to act as one is called:

What two gas giants appear blue because of the methane in their atmosphere/

A star that is gravitationally bound to another star can either be part of a star cluster or a

Earth's average distance from the Sun (1.496 x 10⁸ km) is called:

Where are the old stars of the Milky Way galaxy located?

Interplanetary material that enters the Earth's atmosphere and collides with the ground?

A small, massive, dense object that has a gravity so immense that nothing can escape it.

A lunar eclipse occurs when the Moon passes through Earth's___.

The sequential changes in the appearance of the moon are called?

All stars, including the Sun, have the following identical composition:

Elliptical galaxies are divided into subclasses based on____.

Following the end of each reaction stage, a massive star becomes a ____ several times.

Most of the light emitted by the Sun comes from the ____.

What is a cloud of gas and dust from which stars and planets are formed?

Earth's tilt in combination with its orbit around the Sun cause the_____.

Clouds of interstellar gas and dust that collapse on itself to form a new star are called___.

What causes the sideways push that is responsible for precession?

Other galaxies were first believed to be ____.

Small, icy bodies that have highly eccentric orbits and can be found in the Oort cloud are?