Number 1
What is the basic unit of life?
Cell
What are the building blocks of proteins?
Amino acids.
Which part of the plant absorbs water and nutrients from the soil?
Roots
What are the three main layers of the Earth?
Crust, mantle, and core.
What is a molecule?
Two or more atoms bonded together.
What gas do plants release during photosynthesis?
Oxygen
What is the powerhouse of the cell?
Mitochondria.
What do we call the process when an animal grows new body parts after losing them?
Regeneration.
What is the name of our galaxy?
The Milky Way
What is the Sun?
A star at the center of our solar system.
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.
What are chromosomes?
Structures that carry genetic information.
What is a mutation?
A change in the DNA sequence.
What is volume?
The amount of space an object occupies.
What is recycling?
Reusing materials to make new products.
What is the atomic number of an element?
The number of protons in its nucleus.
What is the function of DNA?
To store and transmit genetic information.
What is mass?
The amount of matter in an object
What causes an earthquake?
The movement of tectonic plates.
What is pollution?
Harmful substances in the environment.
What is the periodic table used for?
To organize and display all known elements.
What is the function of the nucleus in a cell?
It controls cell activities and contains DNA.
What is gravity?
A force that pulls objects toward each other.
What is a constellation?
A group of stars that forms a pattern in the sky.
Why is it important to save water?
Because it’s a limited resource essential for life.
What is evaporation?
When water changes from a liquid to a gas.
What is a mineral?
A natural solid substance that forms rocks.
What is a volcano?
An opening in Earth’s surface that releases lava, gas, and ash.
What is conservation?
Protecting and preserving natural resources.
What is the greenhouse effect?
When gases in Earth’s atmosphere trap heat.
What is migration?
The seasonal movement of animals from one place to another
What is the water cycle?
The process of water moving from the ground to the sky and back again.
What is a renewable resource?
A resource that can be replenished naturally, like solar or wind energy.
What is the atmosphere?
The layer of gases that surrounds Earth.
What are non-renewable resources?
Resources that cannot be easily replenished, like oil and coal
What is a food chain?
A sequence that shows how energy is transferred from one organism to another
What is an adaptation?
A characteristic that helps an organism survive in its environment.
What is hibernation?
A state of inactivity that some animals go into during winter.
What do decomposers do in an ecosystem?
Break down dead plants and animals into nutrients for the soil.
What is climate?
The typical weather pattern of a region over a long period
What is erosion?
The process of rocks and soil being worn away by wind or water.
What is global warming?
The gradual increase in Earth’s temperature due to pollution.
What causes the phases of the Moon?
The changing positions of the Moon, Earth, and Sun.
What is photosynthesis?
The process by which plants make food using sunlight, carbon dioxide, and water.
What causes a solar eclipse?
When the Moon passes between the Earth and the Sun, blocking the Sun.
What is biodiversity?
The variety of life in a specific habitat or ecosystem.
What is a comet?
A body of ice, rock, and dust that orbits the Sun.
What is a life cycle?
The series of stages an organism goes through from birth to adulthood.
What is an ecosystem?
A community of living things interacting with each other and their environment.