← SetsScience — Set 8
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Science Practice Questions — Set 8
10 free Science reviewer questions with answers and explanations. Pindutin ang sagot mo para makita agad kung tama — kasama na ang paliwanag. Set 8 of 10.
71
You have 4 grams of H2 and 32 grams of O2. They react to form H2O. How much water is produced? (2H2 + O2 -> 2H2O)
72
A 10kg box and a 5kg box are dropped from the top of a building at the same time (neglecting air resistance). Which box will hit the ground first?
73
If you double the speed of your car, by what factor does its kinetic energy increase?
74
Why does a metal spoon feel hotter than a wooden spoon when both are placed in boiling water?
75
Why do you lurch forward when a car you are in suddenly stops?
76
According to Newton's Third Law (Action-Reaction), a rocket pushes hot gas *down*. What is the "reaction" force that pushes the rocket *up*?
77
Why do you see lightning *before* you hear the thunder?
78
You have a simple circuit with one battery and two light bulbs connected in *series*. If you add a third bulb in *series*, what will happen to the brightness of the bulbs?
79
You have a simple circuit with one battery and two light bulbs connected in *parallel*. If you add a third bulb in *parallel*, what will happen to the brightness of the *original* two bulbs?
80