1.
The Earth spins on its...
Correct Answer
A. Axis
Explanation
The Earth spins on its axis, which is an imaginary line that runs through the center of the Earth from the North Pole to the South Pole. This rotation causes day and night as different parts of the Earth are exposed to the Sun's light. The axis tilt also leads to the changing of seasons. The other options, such as grid and core, are not correct as they do not accurately describe the Earth's rotation.
2.
The axis of the earth is straight.
Correct Answer
B. False
Explanation
The statement that the axis of the earth is straight is false. The axis of the earth is tilted at an angle of approximately 23.5 degrees relative to its orbit around the sun. This tilt is what causes the change in seasons and the variation in daylight hours throughout the year. If the axis of the earth was straight, there would be no seasonal changes and the length of daylight would be consistent throughout the year.
3.
The earth always spins in the same direction around its axis from...
Correct Answer
D. West to east
Explanation
The earth always spins in the same direction around its axis from west to east. This is known as eastward rotation or prograde rotation. This rotation causes the sun to appear to rise in the east and set in the west. It also determines the direction of prevailing winds, ocean currents, and the rotation of weather systems such as hurricanes. The west to east rotation is a fundamental characteristic of the earth's motion and is consistent with the laws of physics and the formation of the solar system.
4.
The spinning movement of the earth is called...
Correct Answer
B. Rotation
Explanation
The spinning movement of the earth is called rotation. This refers to the earth's movement on its axis, which takes approximately 24 hours to complete. Rotation is responsible for the cycle of day and night, as different parts of the earth are exposed to or hidden from the sun's light. Revolution, on the other hand, refers to the earth's movement around the sun, which takes about 365.25 days and is responsible for the changing of seasons. Leap year is not related to the spinning movement of the earth, but rather the adjustment made to the calendar to account for the extra fraction of a day in a year.
5.
The earth takes 365 days and 6 hours to complete one rotation.
Correct Answer
B. False
Explanation
The statement is false because the earth takes approximately 24 hours to complete one rotation, not 365 days and 6 hours. The time it takes for the earth to complete one rotation is what gives us our day and night cycle.
6.
The movement of the earth around sun in it's orbit is called...
Correct Answer
B. Revolution
Explanation
The movement of the earth around the sun in its orbit is called revolution. This term is used to describe the earth's annual journey around the sun, which takes approximately 365.25 days to complete. During this revolution, the earth follows a slightly elliptical path called an orbit. This movement is responsible for the changing seasons and the length of a year. Rotation, on the other hand, refers to the earth's spinning on its axis, which causes day and night.
7.
A leap year has how many days?
Correct Answer
C. 366
Explanation
A leap year has 366 days because it is a year that is evenly divisible by 4, except for years that are divisible by 100 but not divisible by 400. This extra day, known as February 29th, is added to the calendar every four years to account for the slight discrepancy between the solar year and the calendar year.
8.
'The tilt of the earth's axis' is one of the reasons for...
Correct Answer
B. Seasons
Explanation
The tilt of the earth's axis is one of the reasons for seasons. The earth's axis is tilted at an angle of about 23.5 degrees, which causes different parts of the earth to receive varying amounts of sunlight throughout the year. When a particular hemisphere is tilted towards the sun, it experiences summer, while the other hemisphere experiences winter. As the earth orbits the sun, the tilt causes the seasons to change. This phenomenon is responsible for the different weather patterns and temperatures we experience throughout the year.
9.
The seasons are always same in the two hemisphere.
Correct Answer
B. False
Explanation
The statement is false because the seasons in the two hemispheres are opposite to each other. When it is summer in the northern hemisphere, it is winter in the southern hemisphere, and vice versa. This is due to the tilt of the Earth's axis, which causes different amounts of sunlight to reach each hemisphere at different times of the year.
10.
The rhythm of the earth's movement never changes.
Correct Answer
A. True
Explanation
The statement suggests that the rhythm of the earth's movement remains constant. This implies that the earth's movement, such as its rotation and revolution, follows a predictable and consistent pattern over time. This statement aligns with scientific understanding, as the earth's movement is governed by natural laws and physical forces that do not fluctuate significantly. Therefore, the answer "True" is correct.