Science

Test your understanding of physics, chemistry, biology, general science and space science, and read short explanations that connect each answer to the underlying idea.

• Physics: Motion and forces, Work and energy, Electricity
• Chemistry: Atoms and the periodic table, Chemical bonding, Acids, bases and salts
• Biology: Cells, Human body systems, Plants and photosynthesis
• General Science: Everyday physics and chemistry, Human health and nutrition, Earth and environment
• Space Science: The Solar System, Stars and galaxies, Moon and Sun