Why do we not experience a solar or lunar eclipse every month?

The Moon's orbit is tilted relative to Earth's orbit

The Earth's rotation is too fast

What is the main difference between a total and a partial lunar eclipse?

The entire Moon passes through Earth's umbra in a total eclipse

The Moon is closer to Earth in a total eclipse

The Sun is larger during a partial eclipse

The Moon is farther from Earth in a partial eclipse

Why does the length of daylight change throughout the year?

Earth's axis is tilted relative to its orbit

Earth's distance from the Sun changes

Given the celestial sphere model, explain how the concept of declination helps astronomers locate stars.

Declination specifies a star's position north or south of the celestial equator, similar to latitude on Earth

Declination measures the brightness of a star

Declination measures the distance from Earth to a star

Declination is used to calculate a star's temperature

A person in the Northern Hemisphere notices that the Sun is lower in the sky at noon during December than in June. Using your understanding of Earth's tilt, explain why this occurs.

The Northern Hemisphere is tilted away from the Sun in December, causing the Sun to appear lower in the sky

The Sun is farther from Earth in December

The Earth's rotation slows down in December

The Moon blocks the Sun in December

Describe how the relative positions of the Sun, Earth, and Moon result in a lunar eclipse.

The Earth passes between the Sun and Moon, casting its shadow on the Moon

The Moon passes between the Sun and Earth, blocking sunlight

The Sun passes between the Earth and Moon

The Moon moves out of Earth's shadow

If you observe a full Moon rising at sunset, explain why this occurs in terms of the positions of the Sun, Earth, and Moon.

The Earth is between the Sun and Moon, so the full Moon rises as the Sun sets

The Moon is between the Earth and Sun

The Sun and Moon are on the same side of Earth

A solar eclipse is only visible from certain locations on Earth. Explain why this is the case.

The Moon's shadow only covers a small area on Earth's surface

The Sun is too large to be blocked everywhere

The Earth's rotation prevents a global eclipse

If the tilt of Earth's axis were increased to $$40^\circ$$ , predict how this would affect the seasons.

Seasonal temperature differences would be more extreme

Seasons would be less noticeable

The length of a year would change

Explain why the same side of the Moon always faces the Earth.

The Moon rotates once on its axis in the same time it takes to orbit Earth (synchronous rotation)

The Earth's gravity stops the Moon from rotating

The Sun's gravity locks the Moon's position

During which lunar phase would you expect the highest and lowest tides (spring tides) to occur, and why?

New and Full Moons, because the Sun, Earth, and Moon are aligned, increasing gravitational pull

First and Third Quarters, because the Sun and Moon are at right angles

Waxing Crescent, because the Moon is closest to Earth

Waning Gibbous, because the Moon is farthest from Earth

If you observe a total lunar eclipse, what can you infer about the positions of the Sun, Earth, and Moon?

The Earth is directly between the Sun and Moon, and all three are aligned

The Sun and Moon are on the same side of Earth

The Moon is between the Sun and Earth

The Sun is between the Earth and Moon

Suppose you are at the equator during the equinox. Predict the length of day and night, and explain why.

Day and night are approximately equal in length because the Sun is directly above the equator

Day is longer than night because the Sun is overhead

Night is longer than day because of Earth's tilt

There is no night at the equator during the equinox

What causes the phases of the moon?

The relative positions of the sun, Earth, and moon.

The gravitational pull of the stars.

The magnetic field of the moon.

What is a lunar eclipse?

A lunar eclipse is when the Moon passes through the Earth's shadow.

A lunar eclipse is when the Moon moves in front of the Sun.

A lunar eclipse is when the Earth passes through the Moon's shadow.

A lunar eclipse is when the Moon disappears completely from the night sky.

What causes a lunar eclipse?

Earth passing between the Sun and the Moon

The Moon passing between the Sun and the Earth

The Moon blocking the Sun's light

The Sun passing between the Earth and the Moon

What is a solar eclipse?

A solar eclipse is when the moon blocks the sun's light from reaching the Earth.

A solar eclipse is when the Earth blocks the sun's light from reaching the moon.

A solar eclipse is when the sun blocks the moon's light from reaching the Earth.

A solar eclipse is when the Earth comes between the sun and the moon, casting a shadow on the moon.

What causes a solar eclipse?

The Moon passing between the Sun and the Earth

The Sun passing between the Moon and the Earth

The Earth passing between the Sun and the Moon

The alignment of the planets causing a shadow on the Sun

The Celestial Sphere

Authored by Stephen triton9

Science

12th Grade

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41 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the name of the imaginary sphere on which all celestial objects appear to be projected?

Celestial Sphere

Solar Sphere

Astronomical Sphere

Lunar Sphere

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the term for the point directly above an observer's head on the celestial sphere?

Nadir

Zenith

Meridian

Horizon

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which line divides the celestial sphere into the northern and southern celestial hemispheres?

Ecliptic

Celestial Equator

Prime Meridian

Tropic of Cancer

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main reason Earth experiences seasons?

Distance from the Sun changes

Earth's tilt on its axis

The Sun's temperature varies

The Moon's gravity

How many degrees is Earth's axis tilted relative to its orbital plane?

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which phase of the Moon occurs when the Moon is between the Earth and the Sun?

Full Moon

New Moon

First Quarter

Third Quarter

What is the term for the shadow cast by Earth or the Moon during an eclipse?

Corona

Umbra

Penumbra

Aurora

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The Celestial Sphere

What is the name of the imaginary sphere on which all celestial objects appear to be projected?

What is the term for the point directly above an observer's head on the celestial sphere?

Which line divides the celestial sphere into the northern and southern celestial hemispheres?

What is the main reason Earth experiences seasons?

How many degrees is Earth's axis tilted relative to its orbital plane?

Which phase of the Moon occurs when the Moon is between the Earth and the Sun?

What is the term for the shadow cast by Earth or the Moon during an eclipse?

Which type of eclipse occurs when the Moon passes directly between the Earth and the Sun?

What is the name of the path that the Sun appears to follow across the sky over the course of a year?

During which phase is exactly half of the Moon's visible surface illuminated?

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