Cells & Living Things
What is a cell?
This is the basic unit of life.
Water is made from these two elements.
hydrogen and oxygen?
What is gravity?
The force that pulls objects toward Earth.
Which planet is known as the Red Planet?
Mars
What is inference?
The skill scientists use to make predictions based on evidence.
What are chloroplasts?
These structures in plant cells contain chlorophyll and perform photosynthesis.
What is a proton?
Part of the atom with a positive charge.
What is friction?
This force opposes motion between two surfaces.
What is a revolution?
The movement of Earth around the Sun.
What is the independent variable?
This variable is deliberately changed during an experiment.
What is the mitochondrion?
This organelle is known as the "powerhouse of the cell."
What is a chemical change?
A change that creates a new substance.
What is velocity?
Speed in a specific direction.
What causes the phases of the Moon.
The changing position of the Moon relative to Earth and the Sun
What is reliability?
Scientists repeat experiments to improve this.
What is photosynthesis?
This process allows plants to convert light energy into chemical energy.
What is the pH value of a neutral solution.
7
What is Newton's First Law related to?
Inertia?
What is the mantle?
The layer of Earth made of molten rock beneath the crust.
What is a theory?
A scientific explanation that is supported by a large body of evidence.
What are adaptations?
These are characteristics that help organisms survive in their environment.
What is the Law of Conservation of Mass?
The law stating matter cannot be created or destroyed in a chemical reaction.
What is the unit used to measure force.
Newton
Who is Dr John O'Sullivan?
This Australian scientist helped develop Wi-Fi technology.
A spacecraft leaves Earth and travels beyond our solar system. What is the first major boundary it must cross?
The heliopause