A theromometer is the increase or decrease of earths atmospheric temperture, thats how you would measure the temperture of the air around you.
If I remember correctly, it is the 3rd answer choice.
Neap tide = tide where there is the least difference between high and low water levels
Spring tide = tide where there is the greatest difference between high and low water levels
Equator = an imaginary line drawn around earth dividing it into northern and southern hemispheres
Seasons = the divisions of the year marked by specific weather patterns and daylight hours.
Hope this helps!