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Science Quiz

Authored by Francisco Lozano

Mathematics

8th Grade

Used 1+ times

Science Quiz
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19 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary function of neutrons in an atom?

Generate electrical charge

Contribute to atomic mass

Create ionic bonds

Conduct heat

Answer explanation

Neutrons contribute to atomic mass by adding to the nucleus without affecting the charge, helping stabilize the atom.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a chemical change?

Boiling water

Dissolving sugar in water

Rusting of iron

Melting ice

Answer explanation

The correct choice is 'Rusting of iron' because it involves a chemical reaction where iron reacts with oxygen to form iron oxide, indicating a chemical change.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the particles of a substance as its temperature increases?

They move more slowly

They move more quickly

They decrease in size

They bond more tightly

Answer explanation

As the temperature of a substance increases, the particles move more quickly due to the increase in kinetic energy.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which organ system is primarily responsible for transporting nutrients, oxygen, and wastes to and from cells?

Digestive system

Circulatory system

Nervous system

Excretory system

Answer explanation

The circulatory system is primarily responsible for transporting nutrients, oxygen, and wastes to and from cells.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

Respiration

Photosynthesis

Digestion

Fermentation

Answer explanation

Plants make their food using sunlight through the process of Photosynthesis.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of reproduction involves two parents and produces offspring that are genetically different from each other?

Asexual reproduction

Sexual reproduction

Binary fission

Mitosis

Answer explanation

Sexual reproduction involves two parents and produces genetically different offspring.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What layer of the Earth is made mostly of iron and nickel?

Crust

Mantle

Core

Lithosphere

Answer explanation

The layer of the Earth made mostly of iron and nickel is the Core.

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