Grade 6 science worksheets - Free Printable

Okay, now I have a clear view of the "True or False" questions. I can read all eight statements about the Earth and the Solar System. The first statement is "The moon revolves around the earth," which I know is true. The second, "the earth is the center of the universe," is false according to modern astronomy. The third, "the earth's revolution occurs every 24 hours," is also false because that's the duration of a day (rotation), not a year (revolution). The fourth, "the axis of the earth is tilted," is true. The fifth, "Our solar system is part of the Milky Way galaxy," is true. The sixth, "Venus is the largest planet in our solar system," is false; Jupiter is the largest. The seventh, "the universe is mostly constituted of empty space," is true. The eighth, "the sun's gravity is what keeps the earth in its orbit," is true. Now that I have analyzed each statement, I will provide the final answer.

The correct answers to the True or False questions are as follows:

1. The moon revolves around the earth. - True
* *Explanation:* The Moon orbits the Earth, completing one revolution approximately every 27.3 days.

2. The earth is the center of the universe. - False
* *Explanation:* This is the geocentric model, which was disproven centuries ago. The Earth orbits the Sun, and our solar system is located in one of the spiral arms of the Milky Way galaxy, which is just one of billions of galaxies in the universe.

3. The earth's revolution occurs every 24 hours. - False
* *Explanation:* The Earth's *rotation* on its axis takes approximately 24 hours, which creates our day and night cycle. Its *revolution* around the Sun takes about 365.25 days, which defines a year.

4. The axis of the earth is tilted. - True
* *Explanation:* The Earth's axis is tilted at an angle of approximately 23.5 degrees relative to its orbital plane around the Sun. This tilt is responsible for the seasons.

5. Our solar system is part of the Milky Way galaxy. - True
* *Explanation:* Our Sun and its planets are located within the Milky Way, a barred spiral galaxy containing hundreds of billions of stars.

6. Venus is the largest planet in our solar system. - False
* *Explanation:* Jupiter is the largest planet in our solar system by both mass and volume. Venus is similar in size to Earth but is smaller than Jupiter, Saturn, Uranus, and Neptune.

7. The universe is mostly constituted of empty space. - True
* *Explanation:* The vast distances between celestial bodies mean that the universe is overwhelmingly composed of vacuum or "empty space," even though it contains countless stars, galaxies, and other matter.

8. The sun's gravity is what keeps the earth in its orbit. - True
* *Explanation:* Gravity is the force of attraction between two masses. The Sun's immense gravitational pull keeps the Earth and other planets in their elliptical orbits around it.