Moon and solar system review (ch 27 & 28)

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

The result when Earth intersects a cometary orbit is a(n) ____.

Process of linking separate radio telescopes to act as one

The telescope that uses lenses to bring visible light to a focus

What is the main reason why the surface of Venus is so hot?

The daily rising and setting of heavenly objects like the Sun is caused by the _______ of Earth

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

Earth’s position when the lengths of day and night are equal

Interplanetary material that burns up, becomes a bright, glowing streak of light in atmosphere

The sequential changes in the appearance of the Moon are called ____.

The arrangement of waves that includes gamma rays according to wavelength and frequency

Theory that the Moon formed as a result of a collision between Earth and a Mars sized object

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

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

A device that brings visible light to a focus with mirrors

Can condense and become concentrated enough to form a star and possibly planets

Telescopes are placed __ in order to effectively collect IR and UV radiation, X-rays, and gamma

The movement of a planet in an opposing direction across the sky

Closest point to Earth in the Moon’s orbit

An imaginary line between the Sun and a planet, sweeps out equal amounts of area in equal time

oval shape of most planetary orbits around the sun

Earth’s position near or on December 21, where the N. hemisphere has its minimum daylight hours

Different seasons occur on Earth because Earth’s ___ is tilted 23.58 relative to the ecliptic

A _____________ occurs when Earth passes between the Sun and Moon.

The portion of sunlight reflected by the Moon’s surface

Small, icy body made of ice and rock that has a highly eccentric orbit around the Sun

Technology developed in the space program that now has common commercial uses

When the Moon waxes, the amount of its sunlight portion that we see appears to __ in size.

Earth’s position around June 21, when the northern hemisphere has its maximum daylight hours

Loose, ground-up rock on the Moon’s surface

Material blasted out during impacts that falls back to the Moon’s surface

Farthest point from Earth in the Moon’s orbit

The disk of dust and gas that formed the Sun and planets

Tiny grains of condensed material accumulate and merge together to form these large bodies

Cloud type that is low, warm, dark-colored, and sinking

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

statement describes relationship among masses of 2 bodies, and force and distance between them

Earth’s average distance from the Sun: 1.496 x 10⁸ km

The space exploration program that landed astronauts on the Moon was

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

Cloud of gas and dust from which stars and planets are formed

The Moon’s surface is very different from the surface of Earth because the Moon has no

A dark, smooth plain on the surface of the Moon

Material blasted out of the Moon’s surface as a result of space-object impacts

The blocking of the disk of the sun by the Moon

Moon’s state, in which its rotational period and its orbital period are equal

A lunar eclipse can only occur during the phase of the ____________________.

What force draws the matter in an interstellar cloud together to form a star?

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

Plane of Earth’s orbit about the Sun