MCQs
Read every question, see the correct answer, and understand the explanation at your own pace. Study mode has no timer and no negative marking.
Correct answer
C. Currents in the sea
Explanation
Currents in the sea is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Sound waves
Explanation
Sound waves is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Regolith
Explanation
Regolith is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Ammonia
Explanation
Ammonia is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. 1977
Explanation
1977 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Helium
Explanation
Helium is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Red Sea
Explanation
Red Sea is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Periods
Explanation
Periods is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Saturn
Explanation
Saturn is very large and is the second largest planet in the Solar System. However, it is made up mostly of gas and is less dense than water. Since it is lighter than water, it can float on water. None of the other planets in our Solar System can do this because they have a higher density than water.
Correct answer
C. Two Protons and two Neutrons
Explanation
Two Protons and two Neutrons is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.