According to Wikipedia:
"As a general definition, altitude is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object." ['down' is measured as depth.]
If you're discussing flying altitude, it probably cannot be negative, because the reference point is the ground.
In a geography which is below sea level, you could describe the altitude as negative, but more properly, you'd describe the elevation not the altitude.
(The Mojave Desert and New Orleans, Louisiana, in America both have elevations below sea level.)
Yes, that is correct. Altitude above sea level, for example, is negative or positive - if you are below sea level, a negative number will be used.
I KNOW FROM MY mind that altitude means going up.
Altitude describes an object's position relative to sea level. An object in a position higher than sea level would have a positive altitude, sea level would have an altitude of zero, and any object below sea level would have a negative altitude.
At standard temperature.
the altitude is 10 negative 85 km
at standard temperature
It can be calculated at any altitude - including negative ones - eg under water.
negative nine is the value of negative nine
Altitude is the distance above ground-level that an object is, in a vertical direction (that is, directly away from the centre of the Earth). If this is negative then the object is below ground-level, so it is underground.
A value that is negative, e.g., -5.
If the absolute value of the negative is bigger than that of the positive, then the answer is negative. If the absolute value of the negative is the same, then zero. If the absolute value of the negative is smaller, then positive. Absolute value is the value ignoring the sign.
No, the product of the multiplication of a positive and a negative value is negative.