False.
false
The altitude of an object in the sky is the angular distance of the object above the observer's horizon. It is measured in degrees or radians from the horizon to the object.
Altitude of a celestial body is the angular distance between the horizon and the body when viewed from a specific location on Earth. It is measured in degrees and ranges from 0° at the horizon to 90° at the zenith, directly overhead.
The altitude of the horizon is 0 degrees. This is because the horizon is considered to be at eye level, so it is equivalent to the observer's horizontal line of sight.
At zero degrees altitude, you would be at ground level or sea level. This position marks the horizon line where the sky meets the Earth.
false
Almost . . ."Altitude" is the apparent angle of the object above the horizon.
The altitude of an object in the sky is the angular distance of the object above the observer's horizon. It is measured in degrees or radians from the horizon to the object.
Altitude of a celestial body is the angular distance between the horizon and the body when viewed from a specific location on Earth. It is measured in degrees and ranges from 0° at the horizon to 90° at the zenith, directly overhead.
The altitude of the horizon is 0 degrees. This is because the horizon is considered to be at eye level, so it is equivalent to the observer's horizontal line of sight.
66.5 degrees
At zero degrees altitude, you would be at ground level or sea level. This position marks the horizon line where the sky meets the Earth.
The altitude of aircraft is measured above the ground, not above the horizon, and it's a distance. The altitude of the sun is not measured above the ground, and it's not a distance. If it were, it would always be some number near 93 million miles. The altitude of the sun is the angle that an observer sees between his horizon and the sun, and it's different for different observers in different places.
90 degrees
The star is at an altitude of 15 degrees above the horizon at midnight.
An object seen halfway between the horizon and the zenith has an altitude of 45 degrees.An object seen due east of the observer has an azimuth of 90 degrees.
The point on the horizon that is due west has an altitude of zero and an azimuth of 270 degrees.