In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

[Q]: Question: Wendy decreases the frequency of her radio's sound waves. These waves now have _____ energy.
Answer: less
[A]: Higher frequency waves have greater energy.

[Q]: Question: Mars has _____ effect on the tides than the Moon.
Answer: less
[A]: The Moon has a greater effect on the tides because, although it is much smaller than the Sun, it is much closer.

[Q]: Question: Dan was excited to try out an electromagnet and was happy when it was very effective. He knew however that if he changed the current he could make it weaker. How should he adjust the current?
Answer: decrease it
[A]:
The more current, the stronger the electromagnet.