Answer:
a) Direct
b) Direct
c) Inverse
d) Direct
e) Inverse
Explanation:
a) Speed of Car and Distance Traveled
Direct
Since, speed = (distance)(time)
Therefore, for constant time, Speed α Distance
b) No. of People at Party and Amount of Food Consumed
Direct
Since,
Food Consumed = (Food Consumed by 1 Person)(No. of People at Party)
Therefore, for constant amount of food consumed by 1 person,
Food Consumed α No. of People at Party
c) Elevation above Sea Level and Air Temperature
Inverse
The relation between altitude and air temperature is not constant. It changes in every layer of the atmosphere. So, if we only talk about the first layer, that is, Troposphere. Then the relation between elevation above sea level and air temperature is:
Air Temperature α 1/Elevation Above Sea Level
As, the elevation increases the air temperature decreases.
d) Distance of a Planet from Sun and Period of Revolution
Direct
According to Kepler's Law:
Period of Revolution α (Distance from Sun)^1.5
e) Temperature of a Bowl of Soup and Time
Inverse
Since, the initial temperature of soup is higher than the surrounding. Thus it loses heat to the surrounding with time. As a result the temperature of the soup decreases with time.
Therefore,
Temperature of Bowl of Soup α 1/Time
