Module 1

Question 1

Earth has been existing _________ billion years.

Answer 1

4.543 billion years

Question 2

It influences how quickly atoms, molecules or organisms
move.

Answer 2

Temperature

Question 3

_________ temperature slows down chemical reaction and produces ice
that makes liquid water unavailable. _________temperature can cause break
down of important biological molecules.

Answer 3

Low, High

Question 4

It is one of the important ingredients in the different biological processes. Absence of this will interfere reactions necessary for life.

Answer 4

Water.

Question 5

It provides significant insulation or shielding from the
sun and impact of small to medium size meteorites.

Answer 5

Atmosphere.

Question 6

Greenhouse gases
like ___________________ and ______________ trap heat and protects
our planet from freezing.

Answer 6

carbon dioxide (CO2), methane (CH4)

Question 7

______________ layer shields the Earth’s
surface from harmful UV radiation.

Answer 7

ozone (O3)

Question 8

Earth has available __________ rich sunlight to support life. Living organisms like plants and photosynthetic bacteria use light as the
source of their energy.

Answer 8

energy

Question 9

It is an essential factor used to build and maintain
organism’s body structure. Insufficient or absence of nutrients can
impede synthesis of the different biological molecules.

Answer 9

Nutrients.

Question 10

The presence of ___________ also helps in sustaining its
atmosphere.

Answer 10

gravity

Question 11

Volcanism also helps in cycling the nutrients.