Exploration and Life in the Solar System

Front

Why isn't Venus also being explored in a similar way to Mars?

Back

The temperature on Venus is too hot.

Answer explanation

The correct answer is that the temperature on Venus is too hot. Venus has surface temperatures around 900°F (475°C), making it extremely challenging for exploration compared to Mars, which has a more manageable climate.

Front

What contributes to supporting life on Earth?

Back

How close it is to its star

Answer explanation

The distance from a star affects a planet's temperature and climate, crucial for supporting life. Being at the right distance allows for liquid water, essential for life, making 'how close it is to its star' a key factor.

Front

In terms of gravity, as the distance increases between objects in our solar system, the gravitational pull between those objects _______.

Back

decreases

Answer explanation

As the distance between objects in our solar system increases, the gravitational pull between them decreases. This is due to the inverse square law of gravitation, which states that gravitational force weakens with distance.

Front

Which object has the most gravitational attraction in our solar system? Options: Jupiter, the Kuiper Belt, the Sun, the asteroid belt

Back

the Sun

Answer explanation

The Sun has the most gravitational attraction in our solar system due to its massive size and mass, which is about 99.86% of the total mass of the solar system, overpowering all other objects including Jupiter and the Kuiper Belt.

Front

Earth's distance from the Sun ______ help accomplish a "just right" temperature.

Back

does

Answer explanation

Earth's distance from the Sun does help accomplish a 'just right' temperature by allowing the planet to receive the right amount of solar energy, which is essential for maintaining life and climate stability.

Front

A solid core and crust ______ help accomplish a "just right" temperature.

Back

do not

Answer explanation

A solid core and crust do not help accomplish a 'just right' temperature, as they can lead to extreme conditions instead. Thus, the correct choice is 'do not'.

Front

Craters, basins, cliffs, volcanoes ______ help accomplish a "just right" temperature.

Back

do not

Answer explanation

Craters, basins, cliffs, and volcanoes do not contribute to achieving a 'just right' temperature. Instead, they are geological features that can affect temperature but do not inherently regulate it.

Front

A year composed of 365 days ______ help accomplish a "just right" temperature.

Back

does not

Answer explanation

A year composed of 365 days does not guarantee a "just right" temperature, as temperature is influenced by various factors beyond just the number of days in a year.

Front

How many of the following facts about gravity are true? 1. The more mass an object has, the more gravitational attraction it has to other objects. 2. The closer an object is to another object, the more gravitational attraction the objects have to one another. 3. Earth is the source of all gravity in the solar system. 4. All planets orbit around the Sun because of how bright it is. 5. Every object has gravity.

Back

3

Answer explanation

Facts 1, 2, and 5 are true, but fact 3 is incorrect because gravity exists beyond Earth, and fact 4 is false as planets orbit due to gravity, not brightness. Therefore, only 2 facts are true.

Front

Why does the Moon orbit Earth and not the Sun?

Back

Because the Moon is closer to Earth, and Earth's gravitational pull is stronger on it.

Answer explanation

The Moon orbits Earth because it is much closer, allowing Earth's stronger gravitational pull to dominate over the Sun's weaker influence at that distance.