1.
Which planet is the only one that supports life on earth
Correct Answer
C. Earth
Explanation
Earth is the only planet in our solar system that supports life as we know it. It has a breathable atmosphere, suitable temperature range, and liquid water, which are essential for the existence of life. Mars, Neptune, and Saturn are not capable of sustaining life due to their extreme temperatures, lack of atmosphere, and inhospitable conditions.
2.
The Earth's axis is tilted at an angle of
Correct Answer
D. 23.5 Degrees
Explanation
The Earth's axis is tilted at an angle of 23.5 degrees. This tilt is known as the axial tilt or obliquity of the Earth. It is the reason for the changing seasons on Earth. As the Earth orbits around the Sun, different parts of the planet receive different amounts of sunlight throughout the year. This tilt also affects the length of daylight hours, with longer days in summer and shorter days in winter. The axial tilt is a crucial factor in determining the climate and weather patterns on Earth.
3.
Earth's axis is (Choose more than one answer)
Correct Answer(s)
A. Is an imaginary line
B. It pass through the centre of the earth
C. Passes from North Pole to South Pole
Explanation
The correct answer is that the Earth's axis is an imaginary line that passes through the center of the Earth and passes from the North Pole to the South Pole. This means that the Earth rotates around this axis, causing day and night as well as the changing of seasons. The Moon, on the other hand, revolves around the Earth, not specifically around its axis.
4.
Eastern part of Earth is behind the western part of the Earth by a day
Correct Answer
B. False
Explanation
The statement is false because the concept of time zones does not mean that the eastern part of the Earth is behind the western part by a day. Time zones are used to divide the Earth into different regions, each with its own standard time. As one moves eastward, the time generally becomes later, but it does not mean that a day is skipped. The International Date Line is the imaginary line that separates two consecutive calendar dates, but it does not cause a difference of a day between the eastern and western parts of the Earth.
5.
Earth's movement around the sun is called
Correct Answer
B. Revolution
Explanation
The correct answer is Revolution because Earth's movement around the sun is known as revolution. Revolution refers to the orbiting or circling motion of a celestial body around another. In the case of Earth, it takes approximately 365.25 days to complete one revolution around the sun, resulting in the length of a year. This movement is responsible for the changing seasons and the different positions of the sun in the sky throughout the year.
6.
Earth's movement around the sun in a fixed path is called
Correct Answer(s)
A. Orbit
C. Is elliptical in shape
Explanation
The correct answer is "Orbit, Is elliptical in shape." Earth's movement around the sun in a fixed path is called an orbit. This path is not a perfect circle, but rather an ellipse, which means it is elliptical in shape.
7.
A calender year has
Correct Answer
C. 365 days
Explanation
A calendar year typically consists of 365 days. This is because it takes approximately 365.24 days for the Earth to complete one orbit around the Sun. To account for this extra fraction of a day, a leap year is added every four years, which has 366 days. However, since this leap year adjustment is not necessary every year, the standard calendar year has 365 days.
8.
Which of the following phenomena is directly caused by the Earth's rotation on its axis?
Correct Answer
B. The occurrence of day and night
Explanation
The Earth's rotation on its axis is responsible for the occurrence of day and night. As the Earth rotates, different parts of the planet are exposed to the Sun's light, causing day, while the parts facing away from the Sun experience night. The other phenomena, like the changing of seasons, are caused by the Earth's tilt and orbit around the Sun, and the phases of the moon are due to the Moon's orbit around the Earth.
9.
A leap year comes every
Correct Answer
C. 4 years
Explanation
A leap year occurs every 4 years. This is because the Earth takes approximately 365.25 days to complete one orbit around the sun. To account for the extra quarter day, an additional day is added to the calendar every 4 years, making that year a leap year. This adjustment helps to keep the calendar year synchronized with the solar year.
10.
What causes seasons of the year
Correct Answer
D. Revolution and tilt of the earth
Explanation
The seasons of the year are caused by the combination of the earth's revolution around the sun and its tilt on its axis. As the earth revolves around the sun, different parts of the planet receive varying amounts of sunlight throughout the year. The tilt of the earth's axis also plays a role, as it causes the sun's rays to be more direct in some areas during certain times of the year, leading to warmer temperatures and longer days. This explains why different hemispheres experience opposite seasons at the same time.
11.
Select seasons of the year
Correct Answer(s)
A. Summer
B. Winter
C. Autumn
D. Spring
Explanation
The given answer includes the correct seasons of the year, which are Summer, Winter, Autumn, and Spring. These are the four main seasons that occur in a year. Summer is characterized by warm weather, Winter by cold weather, Autumn by falling leaves and cooler temperatures, and Spring by blooming flowers and warmer weather. The options "Maiden" and "Thatcher" are not seasons of the year, so they are not included in the correct answer.
12.
What is summer solstice
Correct Answer
A. The longest day in northern hemispHere
Explanation
The summer solstice is the correct answer because it refers to the day with the most daylight hours in the northern hemisphere. It occurs around June 21st each year when the Earth's axial tilt is at its maximum, causing the sun to reach its highest point in the sky. This results in the longest period of daylight for the northern hemisphere, making it the longest day of the year.
13.
During Equinox
Correct Answer(s)
A. Sun shines twice directly on the Equator
B. Length of day and night is equal
C. Happens twice a year
Explanation
During the equinox, the sun shines directly on the equator, resulting in equal lengths of day and night. This phenomenon occurs twice a year, once in the spring (around March 20th) and once in the fall (around September 22nd).
14.
Equinox occurs on
Correct Answer(s)
A. 20th or 21st March
B. 22nd or 23rd September
Explanation
Equinox occurs on 21 March and 23 September. Equinox is the moment when the Sun is directly above the Earth's equator, resulting in equal day and night lengths. On these two dates, the tilt of the Earth's axis is neither towards nor away from the Sun, causing the Sun to be positioned directly over the equator. This phenomenon marks the beginning of spring in the northern hemisphere on 21 March and the beginning of autumn on 23 September.