Chemistry
Anything that takes up space and has mass is
Matter
What force pulls objects towards the centre of the Earth?
Gravity
This part of the cell is like the “security guard,” controlling what substances can enter or exit.
cell membrane
This scientist formulated the law of universal gravitation after observing how objects fall to the ground. His work revolutionized our understanding of physics and motion. Who is he?
Isaac Newton
What is the study of eartquakes called?
Seismology
When a solid changes into a liquid it is called
Melting
What instrument is used to measure weight?
a spring balance (or weighing scale)
Which cell part holds the shape of the cell?
Cell wall
This brilliant female scientist made groundbreaking discoveries in radioactivity, identifying two new elements, radium and polonium. She was also the first person to win two Nobel Prizes in different sciences. Who is she?
Marie Curie
What is the name of the galaxy that contains our solar system?
Milky way
In which state of matter do atoms spread apart and fill all the space available to them?
gas
Name the star at the centre of our Solar System.
The Sun
Which part, found on both microscopes and magnifying glasses, is responsible for enlarging the image of the object being observed?
LENS
This theoretical physicist developed the theory of relativity, which introduced the famous equation E=mc², changing how we think about space, time, and energy. Who is he?
Albert Einstein
Which organ pumps blood through your body?
Heart
What is the term used to describe the substance that is dissolved in a solution?
Solute
When a ball falls from a height, what energy changes take place?
From gravitational potential energy to kinetic energy
My main job is to convert food into energy. Without me, the cell cannot function properly. What am I?
Mitochondrion
Often referred to as the father of modern chemistry, this scientist discovered the law of conservation of mass, which states that matter cannot be created or destroyed in a chemical reaction. Who is he?
Antoine Lavoisier
What is the chemical formula of water?
H2O
Two or more substances that are in the same place but are not chemically combined?
Mixture
What is the current?
The flow of electrons in the circuit.
"Why do red blood cells not have a nucleus?"
Red blood cells (RBCs) do not have a nucleus to maximize space for hemoglobin, the protein responsible for carrying oxygen.
In 1928, this scientist accidentally discovered penicillin, which would go on to save millions of lives as the world’s first antibiotic. His discovery marked the beginning of modern antibiotics. Who is he?
Alexander Fleming
What is the SI unit of force?
Newton
John was observing the physical properties of elements in order to classify them as either a metal, nonmetal, or metalloid. The first element was dull, brittle, and did not conduct heat. What would its classification be?
nonmetal
How did gravity help in the formation of the Solar System?
It pulled gas and dust together to form planets and the Sun.
What are the 7 characteristics of living organisms?
Movement, respiration, sensitivity, growth, reproduction, excretion, nutrition.
This Renaissance astronomer challenged the belief that the Earth was the center of the universe. He proposed the heliocentric theory, which showed that the Earth and other planets orbit around the Sun. Who is he?
Nicolaus Copernicus
What types of bags are eco-friendly alternatives to single-use plastic bags?
Paper bags
What is the process called when a solid changes directly into a gas without passing through the liquid state?
sublimation
Explain the difference between mass and weight.
Mass is amount of matter; weight is force of gravity on it.
What types of dyes can be used to observe cells under a microscope, and what are their specific purposes?
Methylene blue is a dye that will stain the cells blue, making them easier to see.
Known for his three laws of motion, this scientist made significant contributions to both physics and mathematics, helping to lay the groundwork for modern science. He is also credited with inventing calculus. Who is he?
Isaac Newton
What gases contribute most to the greenhouse effect?
Carbon dioxide, methane
Which gas is produced when an acid reacts with a metal?
hydrogen gas
Why does your weight change on different planets but your mass stays the same?
Gravity differs, but mass stays constant.
A group of ciliated cells is responsible for moving mucus in the respiratory tract. If one of the ciliated cells loses its ability to move its cilia, how might this affect the health of the respiratory system?
If one of the ciliated cells loses its ability to move its cilia, it would disrupt the coordinated movement of mucus in the respiratory tract. This could lead to a buildup of mucus and debris in that area, increasing the risk of infections, blockages, and reduced airflow.
This scientist proposed the heliocentric model of the solar system, which placed the Sun at the center. Who is he?
Nicolaus Copernicus
What do doctors use to see inside the human body without surgery?
X-ray