Similar to the last question, I remember hearing/reading this from someplace, sometime, many years ago. B: Freezes. It always seemed counter-intuitive to me though. And I'm not sure I believe it. :-\

I know the molecules are moving faster in hot water. And they're bumping into each other more. But It's not clear to me how that accelerates the freezing process.

B: Freezes

Never heard of that effect, but have known for a time that hot water freezes faster than cold, and that answer seems to fit... B: Freezes

Correct answer for Question 47: Science Question

In the not fully understood mpemba effect, hot water sometimes does this faster than cold water…

B: Freezes

Question 48: Science Question

Lemons and limes…How do they react when placed in water?

A: Both float

B: Both sink

C: Lemon floats, lime sinks

D: Lime floats, lemon sinks

Wow, this question is merciless; it could be any or all of those answers. Seems like sugary water is denser than plain water. And while neither lemons nor limes have much sugar in them (duh), they probably have enough to make them sink in water. So I'll say B: Both sink

While here 'lemons' are actually 'limes' as both lemons and limes share the same name - "Limão", the traditional yellow lemon is refereed to as a "Limão Siciliano".

I think I recall that green limes sink while yellow lemons float because of different densities, but that it's not always true.

But I'll still go with C: Lemon floats, lime sinks

Correct answer to Question 48: Science Question

Lemons and limes…How do they react when placed in water?

C: Lemon floats, lime sinks

While lemons are typically larger than limes, they also have a lower density so they float. The denser limes will usually sink.

Question 49: Science Question

Fabric softeners get much of its “softening power” from what?

A: A massive combination of chemicals

B: Animal fat

C: Crude oil

D: Liquified cotton

I've never used fabric softeners, so I've never read the labels. So this is another question I know nothing about. I don't even know if "liquified cotton" is a thing, but I'll say that: D: Liquified cotton (Although, I have a suspicion that it's animal fat.)

I've pretty much given up using it because it tends to build up in the washers here (and being a tropical climate dryers are a rarity...), but I believe it depends on

A: A massive combination of chemicals to create some sort of negative charge to deal with static cling...I think. But I'll stick with that one.

A: A massive combination of chemicals

Something about coating the fabric. My mother always used plain baking soda. Said it worked better and didn't damage the cloth.

I missed the Lemon and lime question, but that's ok as I had no idea what the answer was!

Correct answer Question 49: Science Question

Fabric softeners get much of its “softening power” from what?

B: Animal fat

Question 50: Science Question

Which is fastest?

A: The speed cracks move through breaking glass
B: Blood traveling through your veins
C: Signals from your brain
D: Electricity traveling through a copper wire

Oh good grief, another any-and-all-of-the-above questions. (joking). I'm tempted to say "signals from your brain", but I'll go with D: Electricity traveling through a copper wire

6 hours ago, JB said:

I'm tempted to say "signals from your brain",

Depends on who's brain...I know of some that seem to travel backwards! LOL!

But I think you're right JB - D: Electricity traveling through a copper wire

D: Electricity traveling through a copper wire?

No idea!

On 8/2/2025 at 12:33 AM, Wowman said:

Question 50: Science Question

Which is fastest?

A: The speed cracks move through breaking glass
B: Blood traveling through your veins
C: Signals from your brain
D: Electricity traveling through a copper wire

C: Signals from your brain I reckon

Correct answer to Question 50: Science Question

Which is fastest?

D: Electricity traveling through a copper wire

Cracks - 3000 mph
Blood - about 2 mph
Brain signals - about 250 mph
Electricity - 96% the speed of light - so about 643,791,964 mph

Question 51: Science Question

If you were standing on Mars watching the sunset…what color would the sky around the sun appear?

A: Orange
B: Blue
C: Green
D: Deep red

I think I read somewhere that it's the opposite of here on Earth, so rather than oranges sunset with a blue sky like here, it's B: Blue sunset with orange skies there.

Well, there's practically no atmosphere on Mars. And it's the atmosphere that colors our sunsets orange here on Earth. So 'orange' and 'deep red' are probably out of the running. Oxygen is what makes our sky blue; very little oxygen on Mars. That leaves C: Green. But my logic is probably wrong, or incomplete.

B: Blue

I am going with A.

correct answer to Question 51: Science Question

If you were standing on Mars watching the sunset…what color would the sky around the sun appear?

B: Blue

Particles in the Martian air scatter blue light creating a blue halo around the sun that is most visible at sunset.