The greenhouse effect occurs on many planets. If the actual temperature on Venus is -40 degrees, the temperature with the greenhouse effect is 800 degrees. What is the difference between the actual temperature and the temperature with the greenhouse effect.

840 degrees

To find the difference between the actual temperature (-40 degrees) and the temperature with the greenhouse effect (800 degrees) on Venus, we need to subtract the actual temperature from the temperature with the greenhouse effect.

Difference = Temperature with greenhouse effect - Actual temperature

Difference = 800 degrees - (-40 degrees)

To subtract a negative number, we can instead add its positive value.

Difference = 800 degrees + 40 degrees

Now we can perform the addition.

Difference = 840 degrees

Therefore, the difference between the actual temperature on Venus and the temperature with the greenhouse effect is 840 degrees.