ZM vocab Test 2 18-19

Perihelion:

• the grid lines that run east and west on a star chart used by astronomers to find objects in the sky.

• the point in an orbit closest to the Sun.

• the angle measured eastward along the horizon from north to the point directly below the object.

• the international boundary of space.

• the grid lines that run North and South on a star chart used by astronomers to find objects in the sky.

Azimuth:

• the grid lines that run east and west on a star chart used by astronomers to find objects in the sky.

• the point in an orbit closest to the Sun.

• the angle measured eastward along the horizon from north to the point directly below the object.

• the international boundary of space.

• the grid lines that run North and South on a star chart used by astronomers to find objects in the sky.

Right ascension:

• the grid lines that run east and west on a star chart used by astronomers to find objects in the sky.

• the point in an orbit closest to the Sun.

• the angle measured eastward along the horizon from north to the point directly below the object.

• the international boundary of space.

• the grid lines that run North and South on a star chart used by astronomers to find objects in the sky.

Declination:

• the grid lines that run east and west on a star chart used by astronomers to find objects in the sky.

• the point in an orbit closest to the Sun.

• the angle measured eastward along the horizon from north to the point directly below the object.

• the international boundary of space.

• the grid lines that run North and South on a star chart used by astronomers to find objects in the sky.

Karman Line:

• the grid lines that run east and west on a star chart used by astronomers to find objects in the sky.

• the point in an orbit closest to the Sun.

• the angle measured eastward along the horizon from north to the point directly below the object.

• the international boundary of space.

• the grid lines that run North and South on a star chart used by astronomers to find objects in the sky.

Altitude:

• the process by which the eye changes to become more sensitive to dim light.

• an object's angular distance above the horizon.

• the envelope of gases surrounding the earth or another planet.

• the lowest region of the atmosphere, extending from the earth's surface to a height of about 3.7–6.2 miles (6–10 km), which is the lower boundary of the stratosphere.

• any change in speed.

Troposphere:

• the process by which the eye changes to become more sensitive to dim light.

• an object's angular distance above the horizon.

• the envelope of gases surrounding the earth or another planet.

• the lowest region of the atmosphere, extending from the earth's surface to a height of about 3.7–6.2 miles (6–10 km), which is the lower boundary of the stratosphere.

• any change in speed.

Dark adaptation:

• the process by which the eye changes to become more sensitive to dim light.

• an object's angular distance above the horizon.

• the envelope of gases surrounding the earth or another planet.

• the lowest region of the atmosphere, extending from the earth's surface to a height of about 3.7–6.2 miles (6–10 km), which is the lower boundary of the stratosphere.

• any change in speed.

Acceleration:

• the process by which the eye changes to become more sensitive to dim light.

• an object's angular distance above the horizon.

• the envelope of gases surrounding the earth or another planet.

• the lowest region of the atmosphere, extending from the earth's surface to a height of about 3.7–6.2 miles (6–10 km), which is the lower boundary of the stratosphere.

• any change in speed.

Atmosphere:

• the process by which the eye changes to become more sensitive to dim light.

• an object's angular distance above the horizon.

• the envelope of gases surrounding the earth or another planet.

• the lowest region of the atmosphere, extending from the earth's surface to a height of about 3.7–6.2 miles (6–10 km), which is the lower boundary of the stratosphere.

• any change in speed.