Quiz about TOEFL Vocabulary

Question 1

What is the term for the amount of matter in an object?

Accepted Answer

Mass

Answer

Volume

Answer

Density

Answer

Weight

Question 2

Which of the following is a chemical change?

Accepted Answer

Burning wood

Answer

Melting ice

Answer

Boiling water

Answer

Dissolving sugar

Question 3

What is the primary gas found in Earth's atmosphere?

Accepted Answer

Nitrogen

Answer

Oxygen

Answer

Carbon Dioxide

Answer

Hydrogen

Question 4

What is the process by which plants make their food using sunlight?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Transpiration

Answer

Fermentation

Question 5

Which of the following is a renewable energy source?

Accepted Answer

Solar Power

Answer

Coal

Answer

Natural Gas

Answer

Nuclear Power

Question 6

What is the smallest unit of life?

Accepted Answer

Cell

Answer

Organ

Answer

Tissue

Answer

Molecule

Question 7

What is the chemical formula for water?

Accepted Answer

$$H_2O$$

Answer

$$CO_2$$

Answer

$$O_2$$

Answer

$$H_2SO_4$$

Question 8

Which organelle is known as the powerhouse of the cell?

Accepted Answer

Mitochondria

Answer

Nucleus

Answer

Ribosome

Answer

Chloroplast

Question 9

What is the acceleration due to gravity on Earth?

Accepted Answer

$$9.8 \, m/s^2$$

Answer

$$8.9 \, m/s^2$$

Answer

$$10.5 \, m/s^2$$

Answer

$$7.8 \, m/s^2$$

Question 10

Which element is represented by the symbol 'O'?

Accepted Answer

Oxygen

Answer

Osmium

Answer

Gold

Answer

Oganesson

Question 11

What is the pH level of pure water?

Accepted Answer

7

Answer

0

Answer

14

Answer

5

Question 12

Which planet is known as the Red Planet?

Accepted Answer

Mars

Answer

Venus

Answer

Jupiter

Answer

Saturn

Question 13

What is the main component of the sun?

Accepted Answer

Hydrogen

Answer

Helium

Answer

Oxygen

Answer

Carbon

Question 14

What is the term for a species that no longer has any living members?

Accepted Answer

Extinct

Answer

Endangered

Answer

Threatened

Answer

Vulnerable

Question 15

Which of the following is an example of a vector quantity?

Accepted Answer

Velocity

Answer

Speed

Answer

Distance

Answer

Time

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