KIP: Life and Earth

Multiple Choice

Why is the presence of liquid water considered essential for life on Earth?

• It helps regulate temperature and supports chemical reactions necessary for life.

• It is the only substance found on Earth.

• It is required for photosynthesis only.

• It prevents harmful UV rays from reaching the surface.

Multiple Choice

Which of the following is NOT a requirement for living things on Earth?

• Water

• Source of energy

• Complex chemistry

• Lack of stable environment

Fill in the Blank

The region around a star where temperatures allow water to exist as a liquid is called the ___ zone.

Open Ended

Explain how Earth's position in the habitable zone supports the existence of liquid water and life.

Labelling

Put an X on the side of the habitable zone where it would be too hot for water to exist as a liquid and an O on the side of the zone where it is so cold that water would only exist as solid ice.

Drag labels to their correct position on the image

X

O

Multiple Select

Which gases are most abundant in Earth's atmosphere?

• Nitrogen

• Oxygen

• Carbon dioxide

• Hydrogen

Multiple Choice

Which of the following is NOT a way Earth's atmosphere supports life?

• Protects living things from harmful UV rays

• Helps regulate temperatures on Earth

• Burns meteoroids

• Provides most of its atmosphere as oxygen

Multiple Choice

If Earth were smaller, it would have a thicker atmosphere.

• True

• False

Multiple Choice

Earth is protected from meteoroids by its atmosphere.

• True

• False

Multiple Choice

Most of Earth’s atmosphere is oxygen, which is a requirement for most life on Earth.

• True

• False

Multiple Choice

Earth’s atmosphere helps regulate temperatures on Earth.

• True

• False