1.
Scientists have found only 2 substances in the whole universe. What are they?
Correct Answer
C. Matter and Energy
Explanation
The correct answer is Matter and Energy. Scientists have discovered that the universe is composed of matter, which includes all physical substances, and energy, which is the capacity to do work or cause change. These two fundamental entities are found throughout the entire universe, making them the only known substances.
2.
Who is was the scientist that explained gravity and motion?
Correct Answer
A. Isaac Newton
Explanation
Isaac Newton is the correct answer because he is the scientist who explained gravity and motion. He formulated the laws of motion and the law of universal gravitation, which have been fundamental in understanding the behavior of objects in motion and the force of gravity. Newton's contributions to the field of physics revolutionized our understanding of the natural world and laid the foundation for modern physics.
3.
What is the label for the volume of solids?
Correct Answer
B. Cm3
Explanation
The label for the volume of solids is cm3. This unit, also known as cubic centimeters, is commonly used to measure the volume of three-dimensional objects. It represents the amount of space occupied by a solid and is derived from the cubic measurement of length. Liters and grams are not appropriate labels for the volume of solids as they are typically used to measure liquids and mass, respectively.
4.
What happens in order to move objects?
Correct Answer
A. Another substance is displaced.
Explanation
When objects are moved, another substance is displaced. This means that when an object is moved from one place to another, it pushes aside or displaces another substance that was occupying that space. This displacement of another substance allows the object to occupy the new space, causing it to move.
5.
How long is a day?
Correct Answer
B. 23 hours and 56 minutes
Explanation
A day is defined as the time it takes for the Earth to complete one full rotation on its axis. This rotation takes approximately 23 hours and 56 minutes. This is slightly shorter than a 24-hour day, which is why we have leap years and leap seconds to account for the small discrepancy.
6.
How long is a year?
Correct Answer
C. 365 days and 1/4 day
Explanation
A year is typically defined as the time it takes for the Earth to complete one orbit around the Sun. However, this orbit is not exactly 365 days long. It actually takes about 365 days and 6 hours. To account for this extra time, we add an extra day to the calendar every four years, creating a leap year. This extra day, known as February 29th, helps to keep our calendar in sync with the Earth's orbit. So, the correct answer is 365 days and 1/4 day, as it accounts for the additional 6 hours in a year.
7.
How many planets are there in our solar system?
Correct Answer
B. 8
Explanation
There are 8 planets in our solar system. This includes Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. These planets orbit around the Sun and are part of our solar system.
8.
Does moon have gravity?
Correct Answer
A. Yes
Explanation
The moon does have gravity. Although it is much weaker than Earth's gravity, it still has enough force to keep objects and astronauts on its surface. This is why astronauts can walk and jump on the moon, and why the moon is able to orbit around the Earth. Gravity is a fundamental force of nature that exists between all objects with mass, and the moon, despite its smaller size, is no exception.
9.
Study of living organisms come under:
Correct Answer
C. Biology
Explanation
The study of living organisms falls under the field of biology. Biology is the scientific discipline that focuses on the study of living organisms, including their structure, function, growth, evolution, and distribution. It encompasses various sub-disciplines such as botany, zoology, microbiology, and genetics, among others. Chemistry deals with the composition, properties, and reactions of substances, while physics focuses on the fundamental principles of matter and energy. Therefore, the correct answer is biology.
10.
How many laws of gravity has Newton given?
Correct Answer
B. 3
Explanation
Newton has given three laws of gravity. These laws are known as Newton's laws of motion and they describe the behavior of objects under the influence of gravitational forces. The laws state that objects at rest will remain at rest unless acted upon by a force (first law), the force acting on an object is equal to its mass times its acceleration (second law), and for every action, there is an equal and opposite reaction (third law). Therefore, the correct answer is 3.