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What is a mutation?
A change in the DNA sequence.
What are chromosomes?
Structures that carry genetic information
What is the function of the roots in plants?
To absorb water and nutrients.
What is the purpose of red blood cells?
To carry oxygen throughout the body.
What is the name of our galaxy?
The Milky Way
What is the function of DNA?
To store and transmit genetic information.
What are the three main layers of the Earth?
Crust, mantle, and core.
What is the atomic number of an element?
The number of protons in its nucleus.
What is pollution?
Harmful substances in the environment
What is a molecule?
Two or more atoms bonded together
What is the atmosphere?
The layer of gases that surrounds Earth.
What is volume?
The amount of space an object occupies
What is an asteroid?
A small rocky object that orbits the Sun
What is the purpose of red blood cells?
To carry oxygen throughout the body.
Why is it important to save water?
Because it’s a limited resource essential for life.
What is mass?
What is mass?
What is the Sun?
A star at the center of our solar system.
What is recycling?
Reusing materials to make new products.
What is the function of the nucleus in a cell?
It controls cell activities and contains DNA.
What are the three main types of blood cells?
Red blood cells, white blood cells, and platelets.
What is the periodic table used for?
To organize and display all known elements
What is an element?
A substance made of only one type of atom
What is the pH scale used for?
To measure how acidic or basic a substance is.
What does the respiratory system do?
It takes in oxygen and removes carbon dioxide.
What is a comet?
A body of ice, rock, and dust that orbits the Sun.
What is an ecosystem?
A community of living things interacting with each other and their environment.
What is migration?
The seasonal movement of animals from one place to another
What is weight?
The force of gravity acting on an object's mass.
What is gravity?
A force that pulls objects toward each other
What causes the phases of the Moon?
The changing positions of the Moon, Earth, and Sun.
What is a chemical reaction?
A process where substances change into new substances
What is hibernation?
A state of inactivity that some animals go into during winter
What is a volcano?
An opening in Earth’s surface that releases lava, gas, and ash.
What are non-renewable resources?
Resources that cannot be easily replenished, like oil and coal
What is global warming?
The gradual increase in Earth’s temperature due to pollution.
What is a compound?
A substance made of two or more elements chemically combined
What is the water cycle?
The process of water moving from the ground to the sky and back again.
What is climate?
The typical weather pattern of a region over a long period
What is conservation?
Protecting and preserving natural resources.
What is the greenhouse effect?
When gases in Earth’s atmosphere trap heat.
What is photosynthesis?
The process by which plants make food using sunlight, carbon dioxide, and water
What is a renewable resource?
A resource that can be replenished naturally, like solar or wind energy
What is the main difference between plant and animal cells?
Plant cells have a cell wall and chloroplasts; animal cells do not.
What causes a solar eclipse?
When the Moon passes between the Earth and the Sun, blocking the Sun.
What is the difference between weather and climate?
Weather is short-term atmospheric conditions; climate is the average over a long time.
What is a food chain?
A sequence that shows how energy is transferred from one organism to another
What is inertia?
The tendency of an object to resist changes in motion
What is a life cycle?
The series of stages an organism goes through from birth to adulthood.
What is an adaptation?
A characteristic that helps an organism survive in its environment.
What do decomposers do in an ecosystem?
Break down dead plants and animals into nutrients for the soil