The Habitable Zone

Multiple Choice

What is the habitable zone?

• A zone with the correct distance away from a star
• A zone in space where water turns into vapor
• A zone where life can not be sustained
• A zone in space where water is frozen

Multiple Choice

Which of the following is NOT typically considered a factor that makes a planet habitable?

• Temperature

• Water

• Atmosphere

• Gravity

Hotspot

Select the HABITABLE zone

Multiple Choice

In our solar system, which planet can be found in the habitable zone?

• Mercury
• Saturn
• Earth
• Uranus

Open Ended

Explain how temperature affects the movement of atoms and molecules, and why this is important for life.

Multiple Select

Which of the following statements about the effects of high temperature on biological molecules is/are correct?

• High temperatures can cause proteins and carbohydrates to break apart.

• High temperatures can quickly evaporate water.

• High temperatures have no effect on genetic material.

• High temperatures always support life.

Multiple Choice

The four conditions that enable life on Earth are...

• Frozen water, liquid water, breathable gases, gravity

• Liquid water, gravity, atmosphere, temperature

• Liquid water, frozen water, seasons, atmosphere

• Breathable atmosphere, gravity, seasons, water

Multiple Choice

Which temperature range is considered suitable for life to exist, according to the slides?

• -15°C to 115°C

• 0°C to 100°C

• -50°C to 50°C

• -100°C to 150°C

Open Ended

Why is the presence of water considered essential for a planet to be habitable?

Multiple Choice

The distance from a star where liquid water can exist on a planet's surface is called the _____

• aqua-region
• life area
• habitable zone
• bio-space

Categorize

Options (7)

Earth is far enough from the sun that the water does not boil off into space.

Venus is too hot for life to exist because it has no atmosphere.

Mars has a runaway greenhouse effect that has boiled away all its liquid water.

The proximity of Earth to the sun provides the right amount of energy to allow liquid water

Venus has a thin carbon dioxide atmosphere.

Water exists in three states on Earth: solid, liquid, and gas.

Earth is the only known planet that supports life.

Which statements are true about why liquid water can exist on Earth but not on Mars or Venus?

Can have water (True)

Cannot have water (False)

Multiple Choice

Earth’s atmosphere contains water vapor and carbon dioxide. These greenhouse gases are important because they -

• are substances animals need to breathe.
• trap thermal energy in the atmosphere.
• 
  protect against magnetic particles.
• create Earth’s gravitational field.

Multiple Choice

Which helps protect the earth from radiation?

• Water
• Atmosphere
• Mantle
• Gravity

Multiple Choice

Which of the following is NOT a function of Earth's atmosphere?

• Trapping heat

• Providing chemicals needed for life

• Shielding the surface from harmful radiation

• Producing energy for organisms

Multiple Choice

What happens to organisms when there is too little sunlight or too few chemicals that provide energy to cells?

• They thrive

• They die

• They reproduce faster

• They become dormant

Multiple Choice

If the Earth were any closer to the Sun, how would conditions for life on Earth change?

• The conditions would be too cold to support life.

• The conditions would be too hot to support life.

• The conditions would be exactly the same.

Multiple Choice

Which of the following is NOT a factor that makes a planet habitable?

• Temperature

• Water

• Atmosphere

• Gravity

Multiple Choice

Which of the following conditions are absolutely necessary for a planet to support life?

• All must be present for a planet to support life

• I, II, and IV

• II and III

• II, IV, and V

Multiple Choice

Which planet would be the most likely place to observe for life?

• A

• B

• C

• D

Open Ended

Reflecting on today's lesson, which factor do you think is most crucial for a planet's habitability and why?