# Kidscience: Solar System Interactions Quiz

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• 1.

### Which correctly shows the sequence of the planets you would pass if you were traveling to the planet Mercury?  (Assume that the planets are lined up.)

• A.

Mars, Venus, Sun

• B.

Venus

• C.

Mars, Asteroid Belt, Jupiter

• D.

Mars, Jupiter, Saturn

B. Venus
Explanation
The correct answer is Venus. This is because the question asks for the sequence of planets you would pass if traveling to Mercury. Since Mercury is the closest planet to the Sun, you would pass Venus first before reaching Mercury.

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• 2.

### As a planet's distance from the sun increases, the amount of energy it receives from the sun______________.

• A.

Increases

• B.

Decreases

• C.

Remains constant

B. Decreases
Explanation
As a planet's distance from the sun increases, the amount of energy it receives from the sun decreases. This is because the intensity of sunlight decreases as the distance from the sun increases. The inverse square law states that the intensity of radiation is inversely proportional to the square of the distance from the source. Therefore, as the distance increases, the energy received per unit area decreases, resulting in a decrease in the total energy received by the planet.

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• 3.

### What would most likely happen to the planets if the sun's gravitational pull increased or decreased?

• A.

The planets would continue at the same speed and orbit around the sun.

• B.

The solar system would remain balanced.

• C.

The revolution periods of the planets would change.

• D.

The mass of the planets would change instantly.

C. The revolution periods of the planets would change.
Explanation
If the sun's gravitational pull increased or decreased, it would affect the revolution periods of the planets. The gravitational force between the sun and the planets is what keeps them in their orbits. If the gravitational pull increased, the planets would experience a stronger force, causing them to move faster and therefore decreasing their revolution periods. Conversely, if the gravitational pull decreased, the planets would experience a weaker force, causing them to move slower and increasing their revolution periods. Therefore, a change in the sun's gravitational pull would directly impact the revolution periods of the planets.

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• 4.

### If you traveled to Mars and Jupiter, which would describe your weight?

• A.

Your weight would increase on Mars and decrease on Jupiter.

• B.

Your weight would decrease on Mars and decrease on Jupiter.

• C.

Your weight would decrease on Mars and increase on Jupiter.

• D.

Your weight would stay the same.

C. Your weight would decrease on Mars and increase on Jupiter.
Explanation
This answer correctly states that your weight would decrease on Mars and increase on Jupiter. This is because weight is determined by the gravitational pull of a planet, and both Mars and Jupiter have different gravitational forces compared to Earth. Mars has a weaker gravitational force than Earth, so you would weigh less there. On the other hand, Jupiter has a much stronger gravitational force than Earth, so you would weigh more there.

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• 5.

### An Astronaut with a mass of 150 lbs was sent into space.  How would the astronaut's mass be affected on the moon?

• A.

Mass would increase.

• B.

Mass would decrease.

• C.

Mass would stay the same.

C. Mass would stay the same.
Explanation
The mass of an object remains constant regardless of its location. Mass is a measure of the amount of matter in an object and is independent of gravity or location. Therefore, the astronaut's mass would stay the same on the moon.

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• 6.

### Which of these belongs in our solar system?

• A.

The milky way galaxy

• B.

Other stars in other galaxies

• C.

The universe

• D.

Haley's comet

D. Haley's comet
Explanation
Haley's comet belongs in our solar system because it is a celestial object that orbits the Sun. It is a periodic comet that returns to our solar system approximately every 76 years. Unlike the milky way galaxy, other stars in other galaxies, and the universe, Haley's comet is a specific object within our solar system that can be observed and studied.

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• 7.

### Which is a system within the solar system?

• A.

The moon orbiting the earth

• B.

A comet traveling around the sun

• C.

Planets and their moons

• D.

All of the above

D. All of the above
• 8.

### Order the planets from shortest day to longest day? Planet Period of Rotation Period of Revolution Earth 24 hours 1 year Mars 25 hours 1.8 years Jupiter 10 hours 12 years Saturn 12 hours 30 years

• A.

Jupiter, Saturn, Earth, Mars

• B.

Mars, Earth, Jupiter, Saturn

• C.

Earth, Mars, Jupiter, Saturn

• D.

Saturn, Jupiter, Mars, Earth

A. Jupiter, Saturn, Earth, Mars
• 9.

### Gravity on each planet depends on the planet's _________________.

• A.

Distance from the sun

• B.

Rotation period

• C.

Mass

• D.

Weight

C. Mass
Explanation
Gravity on each planet depends on the planet's mass. The mass of a planet determines the amount of gravitational force it exerts on objects. The greater the mass of a planet, the stronger its gravitational pull. This is why objects weigh more on planets with larger masses, such as Earth, compared to planets with smaller masses, such as the Moon. The distance from the sun, rotation period, and weight of a planet do not directly affect its gravitational force.

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• 10.

### Which statements are true?

• A.

Saturn is the 5th planet, The sun has darkened areas called sunspots, comets come from the kuiper belt.

• B.

Venus is the 2nd planet, The kuiper belt is between Mars and Jupiter, Earth is the 3rd rocky planet.

• C.

Venus is a rocky planet, Uranus is the 2nd gas planet from the sun, the asteroid Belt separates the inner and outer planets.

• D.

Planet Mercury has the shortest period of revolution, Jupiter is the largest planet, comets are in our solar system

D. Planet Mercury has the shortest period of revolution, Jupiter is the largest planet, comets are in our solar system
Explanation
The statement "Planet Mercury has the shortest period of revolution, Jupiter is the largest planet, comets are in our solar system" is true. The period of revolution refers to the time it takes for a planet to complete one orbit around the sun, and Mercury has the shortest period among all the planets. Jupiter is indeed the largest planet in our solar system, and comets are celestial bodies that are part of our solar system and can be found in various regions such as the Kuiper Belt or the Oort Cloud.

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