1.
____________ is the movement of one object around another object.
Correct Answer
B. Revolution
Explanation
The correct answer is revolution. Revolution refers to the movement of one object around another object. This term is commonly used to describe the movement of planets around the sun or the movement of the moon around the Earth. Rotation, on the other hand, refers to the spinning or turning of an object around its own axis. Orbit is a term used to describe the path that an object takes as it revolves around another object.
2.
The __________ diameter is more than 100 times greater than Earth’s diameter.
Correct Answer
sun
Explanation
The sun's diameter is more than 100 times greater than Earth's diameter. This is because the sun is a massive star, much larger than our planet. Its diameter is approximately 1.4 million kilometers, while Earth's diameter is only about 12,742 kilometers. The sun's immense size is what allows it to emit such intense heat and light, making it the center of our solar system.
3.
The path a revolving object follows is its ____________.
Correct Answer
A. Orbit
Explanation
An object that revolves around another object follows a path called its orbit. This term is commonly used to describe the path of celestial bodies such as planets, moons, and satellites as they move around a central object due to gravitational forces. The concept of an orbit implies a continuous and predictable motion around a fixed point, which distinguishes it from the terms "revolution" and "rotation" that refer to specific types of movement.
4.
It takes approximately one _________ for Earth to make one revolution around the Sun.
Correct Answer
year
Explanation
The correct answer is "year" because a year is defined as the time it takes for Earth to complete one full orbit around the Sun. This period is approximately 365.25 days, which is why we have leap years every four years to account for the extra quarter day.
5.
Earth moves around the Sun because of the pull of gravity between Earth and the
Sun.
Correct Answer
A. True
Explanation
The explanation for the given correct answer is that the force of gravity between Earth and the Sun is what keeps Earth in its orbit. Gravity is a force that attracts objects towards each other, and because the Sun is much larger and more massive than Earth, its gravitational pull is strong enough to keep Earth in a stable orbit around it. This gravitational attraction is what causes Earth to continuously move in a curved path around the Sun.
6.
The force of gravity between two objects depends on the _______ and the _________ of the objects.
Correct Answer
B. Mass and distance
Explanation
The force of gravity between two objects depends on their mass and the distance between them. The greater the mass of the objects, the stronger the gravitational force between them. Similarly, the closer the objects are to each other, the stronger the gravitational force. The shape, size, and color of the objects do not affect the force of gravity between them.
7.
Earth’s rotation makes the Sun appear to rise in the __________.
Correct Answer
east
Explanation
The Earth's rotation causes the Sun to appear to move across the sky from east to west. As the Earth spins on its axis, different parts of the Earth are exposed to the Sun's light, creating the illusion of the Sun rising in the east and setting in the west. This is a result of the Earth's counterclockwise rotation when viewed from above the North Pole.
8.
The ___________ of an object is its spinning motion.
Correct Answer
B. Rotation
Explanation
Rotation refers to the spinning motion of an object. It describes the movement of an object around its own axis. Revolution, on the other hand, refers to the movement of an object around another object or point. Therefore, rotation is the correct answer as it specifically relates to the spinning motion of an object.
9.
It takes one _________ for Earth to complete one rotation.
Correct Answer
day
Explanation
Earth takes one day to complete one rotation. This is because a day is defined as the time it takes for a planet to complete one rotation on its axis. In the case of Earth, it takes approximately 24 hours for it to complete one full rotation, resulting in the cycle of day and night that we experience.
10.
Earth’s __________ change in a yearly cycle because of the tilt of its rotation axis and
Earth’s motion around the Sun.
Correct Answer
C. Seasons
Explanation
The correct answer is seasons. The tilt of Earth's rotation axis and its motion around the Sun cause the change in seasons. As Earth orbits the Sun, different parts of the planet receive varying amounts of sunlight, resulting in the four distinct seasons: spring, summer, autumn, and winter. This change in seasons occurs in a yearly cycle.
11.
If the northern end of Earth’s axis leans toward the Sun, it is _______ or ________ in the northern hemisphere.
Correct Answer
B. Spring or summer
Explanation
When the northern end of Earth's axis leans towards the Sun, it results in either spring or summer in the northern hemisphere. This is because during this time, the northern hemisphere receives more direct sunlight and experiences warmer temperatures.
12.
Because of the tilt of Earth’s axis, Earth’s surface becomes more tilted as you move
away from the sun.
Correct Answer
B. False
Explanation
The explanation for the correct answer is that the tilt of Earth's axis remains constant as you move away from the sun. The tilt of the Earth's axis is approximately 23.5 degrees and does not change with distance from the sun. Therefore, the statement that Earth's surface becomes more tilted as you move away from the sun is false.
13.
Regions of Earth near the poles receive less energy than
regions near the equator.
Correct Answer
A. True
Explanation
The regions of Earth near the poles receive less energy than regions near the equator because the poles are tilted away from the sun, resulting in less direct sunlight and a larger area over which the sunlight is spread. This leads to lower temperatures and shorter days near the poles compared to the equator, where the sun's rays are more direct and concentrated, resulting in higher temperatures and longer days.
14.
The end of Earth’s axis that is tilted toward the Sun receives ______ energy from the
Sun.
Correct Answer
more
Explanation
The end of Earth's axis that is tilted toward the Sun receives more energy from the Sun because it is directly facing the Sun's rays. This tilt, known as the axial tilt, causes one hemisphere to be closer to the Sun and receive more direct sunlight, resulting in higher energy absorption. The other hemisphere, which is tilted away from the Sun, receives less direct sunlight and therefore less energy. This imbalance in energy distribution is responsible for the seasons on Earth.
15.
If it is Summer in the Northern Hemisphere, what season is it in the Southern Hemisphere?
Correct Answer
winter
Explanation
In the Northern Hemisphere, summer occurs during the months of June, July, and August. The Southern Hemisphere experiences the opposite seasons, meaning that when it is summer in the Northern Hemisphere, it is winter in the Southern Hemisphere. This is due to the tilt of the Earth's axis, which causes the hemispheres to receive different amounts of sunlight at different times of the year.
16.
During a __________, Earth’s rotation axis is the most toward or away from the Sun.
Correct Answer
B. Solstice
Explanation
During a solstice, Earth's rotation axis is tilted either towards or away from the Sun. This results in the longest or shortest day of the year, depending on the hemisphere. In the Northern Hemisphere, the summer solstice occurs when the axis is tilted towards the Sun, resulting in the longest day of the year. In the Southern Hemisphere, the winter solstice occurs when the axis is tilted away from the Sun, resulting in the shortest day of the year. Solstices mark the changing of seasons and are significant astronomical events.
17.
Solstices occur four times each year.
Correct Answer
B. False
Explanation
Solstices occur twice each year, not four times. A solstice is an astronomical event that happens when the Sun reaches its highest or lowest point in the sky at noon, marking the longest or shortest day of the year. There are two solstices in a year: the summer solstice, which occurs around June 21st in the Northern Hemisphere and around December 21st in the Southern Hemisphere, and the winter solstice, which occurs around December 21st in the Northern Hemisphere and around June 21st in the Southern Hemisphere.
18.
The June solstice is the first day of _____________ in the northern hemisphere.
Correct Answer
B. Summer
Explanation
The June solstice, also known as the summer solstice, marks the beginning of summer in the northern hemisphere. This is because it is the longest day of the year, with the sun reaching its highest point in the sky. The June solstice is a significant event as it signifies the transition from spring to summer, with warmer temperatures and longer days. Therefore, the correct answer is summer.
19.
During its revolution, Earth’s axis does not lean toward or away from the Sun
during a(n) _____________.
Correct Answer
B. Equinox
Explanation
During an equinox, the Earth's axis is not tilted towards or away from the Sun. This means that the Sun is directly above the equator, resulting in equal day and night lengths all over the world. This is in contrast to the solstice, where the Earth's axis is tilted towards or away from the Sun, causing longer or shorter days depending on the hemisphere.
20.
The September equinox marks the first day of _______ in the southern hemisphere
Correct Answer
fall, autumn
Explanation
The September equinox marks the first day of fall, also known as autumn, in the southern hemisphere. This is because the equinox is the moment when the sun crosses the celestial equator, resulting in equal day and night lengths. In the southern hemisphere, this occurs in September, signaling the transition from winter to spring in the northern hemisphere and from winter to summer in the southern hemisphere. Therefore, the correct answer is fall, autumn.
21.
The March equinox marks the first day of _________ in the northern hemisphere.
Correct Answer
D. Spring
Explanation
The March equinox marks the first day of spring in the northern hemisphere. This is because during the equinox, the tilt of the Earth's axis is neither towards nor away from the Sun, resulting in equal amounts of daylight and darkness. This transition from winter to spring signifies the beginning of a new season characterized by warmer weather, longer days, and the blooming of flowers and trees.
22.
List the seasons in order beginning with the season that we are currently in. (Spelling counts; separate each season with a comma)
Correct Answer
spring summer fall winter, spring summer autumn winter, spring, summer, autumn, winter, spring, summer, fall, winter
Explanation
The correct answer is "spring summer fall winter". This is the correct order of the seasons, starting with the current season. The answer also includes the correct spelling of each season and separates them with commas.