The secret weapon of any insect that walks on water is in its body hair. Water striders and fishing spiders both have legs and bodies that are covered in a thick layer of tiny hairs. These hairs trap air in between them, repelling water and helping them keep the bugs afloat. If the insect were to get wet through, it wouldn’t be able to walk on the surface of the water anymore.
A charged balloon is brought near an electroscope but does not touch the electroscope. This is an example of charging by?
Induction
True or False. In a current, electrons will always flow from negative toward positive.
True. Electrons flow from negative toward positive because opposite charges are attracted to each other.
Which of the following materials is an insulator against electric current?
a rubber tire
Which of the following materials is a conductor of electric current?
a copper penny
<u>Answer:</u>
<em>Whistling seen as a bad practice by sailors because it challenges the sea is an example of pseudoscience.
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<u>Explanation:</u>
Pseudoscience literally means false science. It claims to be science but it is not scientific at all. It completely fails in a <em>scientific scrutiny </em>and it is not open to evaluation by other experts.
They are just beliefs and practised claimed to be factual even without any proper method used in <em>developing the hypotheses.
</em>
False<em> pseudo scientific claims</em> can be harmful at times. An example is the propaganda against vaccination.
