Answer:

The last five temperatures were -6 °C, -2 °C, 2 °C, 6 °C and 10 °C and each day the temperature rose by the same amount i.e. by 4 °C.

Explanation:

As the temperature rose steadily each day and the average was 2 °C, we know that the third last temperature was 2 °C (obviously, considering it as the mean value).

Note: The freezing point of water is 0 °C.

If we assume a daily increase by 1 °C, the sequence would be 0, 1, 2, 3, 4. This doesn’t work as we require 1 negative temperature value with 0 °C, as it froze on two occasions [as mentioned in the question] i.e. obviously considering that it froze for two consecutive days, as well as it is an invalid case as the product of the temperatures was over 500 [as mentioned in the question] whereas in this case it’s 0.

If we assume a daily increase by 2 °C, the sequence would be -2, 0, 2, 4, 6. This doesn’t work as the product of the temperatures was over 500 whereas in this case it’s 0.

If we assume a daily increase by 3 °C, the sequence would be -4, -1, 2, 5, 8. This doesn’t work as the product of the temperatures is not over 500, which is a requirement [as mentioned in the question].

If we assume a daily increase by 4 °C, the sequence would be -6, -2, 2, 6, 10. This matches all of the requirements.

Further, if we assume a daily increase by 5 °C, the sequence would be -8, -3, 2, 7, 12. This doesn’t work as the product of the temperatures is not below 2000, which is a requirement [as mentioned in the question].

So, the possible answer is -6 °C, -2 °C, 2 °C, 6 °C and 10 °C.

FLOCK = a gaggle of geese,
CLOCK = a device for measuring time,
CLICK = what you can do with a mouse,
CHICK = a baby chicken,
CHOCK = a device to prevent wheels from moving,
SHOCK = a surprise,
SHACK = a small house,
STACK = a pile of cards,
STICK = a small piece of wood,
STUCK = unable to move.

Letter ‘t’ is the last one in the word ‘alphabet’.

A needle.

They were used by someone who made a snowman. The snow has now melted.

The teacher committed the crime as because it’s the first day of the school and so unfortunately there are no grades to be computed.

The matchstick.  ?

My birth date is…  I seriously don’t feel like telling you my birth date this way out. Better luck next time bro.  ?

The truck driver need not necessarily be within the truck and driving it I suppose…

Solution :

Isaac Newton picks up a piece of wood and lights it from the fire on the west end of the island.

He then quickly carries it near the east end of the island and starts a new fire. The wind will cause that fire to burn out the eastern end and he can then easily shelter in the burnt area.

(Irony :  Isaac Newton will definitely survive the fire, but he will surely die of starvation, with all the food in the forest burnt.)