S4 EOT1.section 1.00

Choose the correct answer

Air is __________ for our lives

S4 EOT1.section 1.02

Choose the correct answer

What is the percentage of nitrogen in the air?

S4 EOT1.section 1.03

Which of the following is INCORRECT?

S4 EOT1.section 1.04

Which of the following is INCORRECT?

S4 EOT1.section 1.05

Which of the following is NOT an application of wind?

S4 EOT1.section 1.06

Which of the following is INCORRECT?

S4 EOT1.section 1.08

Which of the following is CORRECT?

S4 EOT1.section 1.09

Which of the following is INCORRECT about the water cycle?

S4 EOT1.section 2.00

Fill in the blank with ONLY ONE WORD: Humans and animals need ___ to breathe.

S4 EOT1.section 1.10

What should we do to protect the environment in this situation?

S4 EOT1.section 2.01

Fill in the blank with ONLY ONE WORD:

There are three states of water: solid, liquid and __________.

S4 EOT1.section 2.03

Fill in the blank with ONLY ONE NUMBER:

Among a cat, a person, a butterfly and a flower, there are __________ that need air.

S4 EOT1.section 2.04

Fill in the blank with ONLY ONE WORD:

A light __________ is an object that can produce light itself.

S4 EOT1.section 3.01

What state of water is the speaker talking about?

A. solid

B. liquid

C. gas

S4 EOT1.section 3.02

What process in the water cycle is the speaker talking about?

A. evaporation

B. condensation

C. precipitation

S4 EOT1.section 3.03

What process in the water cycle is the speaker talking about?

A. evaporation

B. condensation

C. precipitation

S4 EOT1.section 3.04

What should we do to solve the problem?

A. plant more trees

B.  recycle plastic packages

C.  use public transportation

S4 EOT1.section 3.05

Which light source is the speaker talking about?

A. flashlight

B. torch

C. the Sun