1.
Why do we only see one side of the moon?
Correct Answer
C. The rotation and relolution of the moon are equal.
Explanation
The correct answer is that the rotation and revolution of the moon are equal. This means that the moon takes the same amount of time to rotate on its axis as it does to orbit around the Earth. As a result, the same side of the moon always faces the Earth, while the other side remains hidden from view. This phenomenon is known as tidal locking, and it occurs because of the gravitational forces between the Earth and the moon.
2.
During winter the axis of the earth is pointed____________ from the sun?
Correct Answer
B. Away
Explanation
During winter, the axis of the earth is pointed away from the sun. This is because the earth's axis is tilted, causing one hemisphere to be tilted away from the sun during winter. As a result, the sunlight is spread over a larger area, leading to colder temperatures.
3.
During the summer, where on the earth are the most direct sun rays received?
Correct Answer
B. 23.5 degrees north of the equator
Explanation
During the summer, the most direct sun rays are received at 23.5 degrees north of the equator. This is because during this time, the tilt of the Earth's axis causes the Northern Hemisphere to be tilted towards the sun, resulting in the sun's rays directly hitting this region.
4.
How far is the earth tilted?
Correct Answer
D. 23.5 degrees
Explanation
The Earth 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 the Sun, different parts of the planet receive different amounts of sunlight throughout the year, causing the seasons to change. The tilt also affects the length of daylight hours, with longer days in the summer and shorter days in the winter.
5.
Why does the Earth have seasons?
Correct Answer
C. Because of its tilted axis.
Explanation
The Earth has seasons because of its tilted axis. As the Earth orbits around the sun, different parts of the planet receive varying amounts of sunlight throughout the year. The tilt of the Earth's axis causes the angle at which sunlight hits different regions to change, resulting in the changing seasons. When one hemisphere is tilted towards the sun, it experiences summer, while the other hemisphere is tilted away and experiences winter. As the Earth continues its orbit, the tilt gradually shifts, leading to spring and autumn in between.
6.
What is the phase of the moon at position C?
Correct Answer
C. First Quarter
Explanation
The phase of the moon at position C is the First Quarter. In this phase, the moon is half illuminated and appears as a half-circle in the sky. It occurs when the moon is at a 90-degree angle with the Earth and the sun.
7.
What is the phase of the moon at position E?
Correct Answer
B. Waning Gibbous
Explanation
The phase of the moon at position E is a Waning Gibbous. This means that more than half of the moon is illuminated, but less than a full moon. The illuminated portion of the moon is decreasing, moving towards the Third Quarter phase.
8.
When are the tides largest?
Correct Answer
D. When the three are lined up sun, moon then earth.
Explanation
When the sun, moon, and earth are lined up in that order, it creates a gravitational force that causes the tides to be largest. This alignment, known as syzygy, occurs during the new moon and full moon phases. The gravitational pull from the sun and moon combined creates higher high tides and lower low tides.
9.
What is this picture showning?
Correct Answer
B. A lunar eclipse
Explanation
The picture is showing a lunar eclipse, which occurs when the Earth comes between the Sun and the Moon, causing the Moon to pass through the Earth's shadow. During a lunar eclipse, the Moon can appear to be reddish or orange in color due to the scattering of sunlight by Earth's atmosphere. This phenomenon can be observed from Earth and is a stunning celestial event.
10.
What occurs during a Neap tide?
Correct Answer
B. There are low tides do to the sun, earth and moon being at right angles to each other.
Explanation
During a Neap tide, there are low tides due to the sun, earth, and moon being at right angles to each other. This means that the gravitational forces from the sun and moon partially cancel each other out, resulting in weaker tidal bulges and lower tides.
11.
What season is it in the Southern Hemisphere?
Correct Answer
A. Summer
Explanation
In the Southern Hemisphere, the seasons are the opposite of those in the Northern Hemisphere. When it is summer in the Northern Hemisphere, it is winter in the Southern Hemisphere. Therefore, the correct answer is summer.
12.
Where can you see a total solar eclipse?
Correct Answer
C. When the Earth is in the moon shadow
Explanation
During a total solar eclipse, the Moon moves between the Earth and the Sun, casting a shadow on the Earth. This shadow is known as the moon's shadow or the umbra. When the Earth is positioned within this shadow, a total solar eclipse occurs. This phenomenon allows observers on Earth to witness the Moon completely blocking the Sun's light, resulting in a temporary darkness during the day.
13.
A spring tide and a lunar eclipse can be seen in what phase of the moon?
Correct Answer
A. Full moon
Explanation
During a spring tide, the gravitational forces of the Moon and the Sun align, resulting in higher than usual tidal ranges. A lunar eclipse occurs when the Earth comes between the Sun and the Moon, casting a shadow on the Moon. Both of these events can only happen during a full moon phase when the Moon is on the opposite side of the Earth from the Sun. Therefore, a spring tide and a lunar eclipse can be seen in the full moon phase.
14.
Which statement is correct?
Correct Answer
C. The earth revolves around the sun and rotates on its axis.
Explanation
The correct answer is that the earth revolves around the sun and rotates on its axis. This is a well-known fact in astronomy. The rotation of the earth on its axis causes day and night, while the revolution around the sun causes the change of seasons and the length of a year.
15.
Why does Alaska get longer days during the summer?
Correct Answer
B. Because Alaska is very close the the north pole and receives indirect sunlight.
Explanation
During the summer, Alaska gets longer days because it is very close to the North Pole and receives indirect sunlight. The Earth's tilt causes the Northern Hemisphere to be tilted towards the sun during the summer months, resulting in longer daylight hours. Since Alaska is located near the North Pole, it experiences a phenomenon known as the Midnight Sun, where the sun remains above the horizon for 24 hours a day. However, the sunlight received in Alaska is indirect due to the high latitude, resulting in longer but relatively cooler days compared to regions closer to the equator.