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What weighs more, a pound of gold or a pound of feathers?

What weighs more, a pound of gold or a pound of feathers?
Tatiana Ayazo/Rd.com

If you can answer 50 percent of these science trivia questions correctly, you may be a genius:

What weighs more, a pound of gold or a pound of feathers? You might think that this is a trick science trivia question. But, if you guessed that they weigh the same, you’re wrong. A pound of feathers weighs more. Why? Gold is weighed in the troy measurement system. Therefore, when you convert them both to a uniform system, a pound of gold weighs approximately 373.24 grams and a pound of feathers approximately 453.59 grams.

Like this brain challenge? Check out these 30 amazing facts about your brain that will blow your mind.

What mountain peak is farthest from the centre of the earth?

What mountain peak is farthest from the centre of the earth?
Tatiana Ayazo/Rd.com

Many may think the answer to this science trivia question is Mount Everest. However, the peak of Chimborazo in Ecuador is the farthest from the centre of the earth. Why? The earth actually bulges at the equator because it’s constantly spinning. Since Chimborazo sits on top of the equator and right on this bulge, its peak is the furthest from the earth’s core. Mount Everest is the tallest mountain if you measure it from base to peak, but its peak is not the furthest from the centre of the earth.

For more mind-bending challenges, check out these 12 optical illusions that may break your brain.

At one time, did people believe that the earth was flat?

At one time, did people believe that the earth was flat?
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Humans have known that the earth is round since the time of Ancient Greece. Many believe that it was in the early Middle Ages that some people said the world was flat. But like these other “facts” that have been proven wrong, they eventually learned otherwise.

How long is the memory of a goldfish?

How long is the memory of a goldfish?
Tatiana Ayazo/Rd.com

Most people would say that goldfish only have a three-second memory, however, their memories actually last for several days. Goldfish have a classical conditioning learning procedure, meaning that when they are given food in association with another object they remember the two together – and that memory can last for days.

Read more about the science of forgetting here.

How many senses do humans have?

How many senses do humans have?
Tatiana Ayazo/Rd.com

You actually don’t just have five senses – many neurologists identify nine or more senses. Yes, there are the basic five: touch, taste, smell, sight and hearing, but there are also multiple senses within each of the five, as well as some others. For example, touch is actually made up of several “somatic” senses, including the perception of heat, pain and pressure. Another is the organic sense, which is the sense of your internal condition such as hunger or thirst.

Want to learn more? Check out these 12 diseases doctors can actually detect through smell.

Can sharks get cancer?

Can sharks get cancer?
Tatiana Ayazo/Rd.com

The answer to this science trivia fact is yes, sharks can get cancer. And no, they cannot cure cancer. Unfortunately, many still believe that shark cartilage can cure cancer, leading to the killing of sharks. That’s false, and scientists now have proof that there are sharks with tumours.

However, if you have this mark on your nail, you should get checked for cancer.

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What colour is your blood when it’s inside your body?

What colour is your blood when it’s inside your body?
Tatiana Ayazo/Rd.com

If you look down at your veins, you’ll most likely answer blue to this question. Well, that’s wrong. It’s actually dark red. Many people think that blood is blue inside the body, but once it is exposed to oxygen outside of the body it turns red. However, even when deoxygenated, blood contains haemoglobin, which is a red protein. Therefore, the blood inside of your body is red. Your veins just look blue because of the way they reflect light.

Don’t miss these other mind-blowing science facts about the earth you never learned in school.

Can lightning strike the same place twice?

Can lightning strike the same place twice?
Tatiana Ayazo/Rd.com

If you answered no to this science trivia question, you’re wrong. It is actually very likely that lightning will strike the same place twice. Lightning strikes the earth over 1.5 billion times a year. Many places that are susceptible to getting struck by lightning, such as tall buildings, utility poles or trees, get struck multiple times a year. One example is the Empire State Building in New York City that gets struck dozens of times every year.

Check out these 10 more weird facts about lightning strikes.

Where does the majority of your body heat escape?

Where does the majority of your body heat escape?
Tatiana Ayazo/Rd.com

This is a tricky science trivia question. The answer isn’t your head, even though that’s what most people think. You lose heat evenly throughout your body. In the winter, most of your body heat probably does escape through your head though, because it’s the only part not covered by clothing. So, still wear a hat to keep warm.

If you do find yourself always catching colds, check out these 20 secrets to steal from people who never get sick.

Why do chameleons change colours?

Why do chameleons change colours?
Tatiana Ayazo/Rd.com

Nope, it’s not to blend into their background. There are actually multiple reasons why a male chameleon will change colours, but camouflage is not one of them – mood and temperature play a big role. If the chameleon is happy and trying to mate with a female chameleon, he will change colours or if the temperature cools down, that might cause him to change colours as well.

Speaking of colours, this one is the official “ugliest” colour in the world – and it has been used to prevent smoking!

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Reader’s Digest Magazine delayed due to coronavirus
Please be advised that due to the current lockdown in Malaysia and the Philippines, Reader’s Digest magazine will not be available at its regular on-sale date to our subscribers or through our retail channels in these regions. We hope to have the issues available around 15 April in Malaysia and around 24 April in the Philippines, but this is dependent on when the lockdown restrictions are lifted. We sincerely apologise for this inconvenience.
Thank you and stay safe!
– The Reader’s Digest team