Ecology
What are examples abiotic factors in an ecosystem?
Sunlight, Water, Temperature, Soil, H2O (water), Atmosphere ( Air), Rocks.
What is the difference between a eukaryotic cell and a prokaryotic cell?
A eukaryotic cell contains a nucleus while prokaryotic cells lack a nucleus.
What is a force?
A push or pull
1. Which of the following is part of Earth's geosphere?
A. Oceans
B. Atmosphere
C. Mountains
D. Animals
C. Mountains
1. Which of the following is the smallest particle of an element?
A. Atom
B. Molecule
C. Ion
D. Proton
A. Atom
What is the niche ( role / job ) of a primary consumer in a food web?
A) Omnivore
B)Autotroph
C)Carnivore
D)Herbivore
It is a herbivore because it eats only plants.
What do you call an organism that is composed of 1 cell and consumes other organisms for energy.
An organism that is composed of 1 cell and consumes other organisms for energy is UNICELLULAR and is heterotrophic.
Which of the following is an example of a contact force?
A. Gravity
B. Friction
C. Magnetism
D. Weight
Friction
2. Which Earth sphere is responsible for the weather?
A. Atmosphere
B. Biosphere
C. Geosphere
D. Hydrosphere
A. Atmosphere
2. Which of the following is a property of a gas?
A. Fixed volume
B. Definite shape
C. Takes the shape of its container
D. Molecules are closely packed
C. Takes the shape of its container
One example of a predator and prey relationship is....
The difference between mutualism, parasitism, and commensalism is that....
Who first used the term “cell” after observing cork under a microscope?
Robert Hooke
Identify the two forces acting on a book resting on a table.
A. Gravity and friction
B. Gravity and air resistance
C. Gravity and normal force
D. Tension and applied force
C. Gravity and normal force
Describe and name the four layers of the earth to your classmates.
Crust, Mantle. Outer Core, and Inner Core.
3. What happens to the atoms in a chemical reaction?
A. They are destroyed.
B. They combine to form new atoms.
C. They are rearranged to form new substances.
D. They stay in the same position.
C. They are rearranged to form new substances.
Organism, population, community, ecosystem.
Explain how the invention of the microscope contributed to the development of cell theory.
The microscope allowed scientists to see cells for the first time, leading to discoveries that all living things are made of cells and that cells are the basic unit of life.
A skydiver jumps from a plane. Explain how gravity and air resistance affect the motion of the skydiver as they fall.
Gravity pulls the skydiver downward, making them fall faster. As they speed up, air resistance ( FLUID FRICTION) pushes up against them. Eventually, air resistance becomes strong enough to balance gravity. When this happens, the skydiver stops speeding up and falls at a steady speed.
How does the process of erosion contribute to the formation of sedimentary rock?
A. Erosion pushes rocks deeper into the Earth.
B. Erosion breaks rocks into smaller pieces that are carried by wind or water.
C. Erosion melts rocks into magma, which forms new rocks.
D. Erosion causes rocks to cool and solidify into igneous rock.
B. Erosion breaks rocks into smaller pieces that are carried by wind or water.
BONUS 50: Name one example of each.
Homogeneous = uniform throughout, heterogeneous = not uniform and can be separated easily.
What is the difference between autotrophs and heterotrophs? What chemical change do autotrophs experience?
The difference between autotrophs and heterotrophs is that autotrophs create their own food through photosynthesis ( chemical change because something new is formed) while heterotrophs consume in order to obtain their energy.
If a new microscopic organism was discovered and scientists found it was not made of cells, how would this challenge the current cell theory? What might scientists need to do next?
If the new organism is not made of cells, it would go against the first part of cell theory, which says all living things are made of one or more cells.
Scientists would need to study the organism more closely and gather more evidence to see if it is truly alive. If it is, they might need to revise or expand the cell theory to include this exception, just like scientific ideas have changed in the past with new discoveries.
When a volleyball player jumps to spike the ball, the player pushes down on the ground with their legs. According to Newton’s Third Law, what happens next — and why does the player go upward?
When the volleyball player pushes down on the ground with their legs, the ground pushes back up with an equal and opposite force. This upward force is what makes the player jump into the air. According to Newton’s Third Law, for every action, there is an equal and opposite reaction. So, the force the player applies to the ground is matched by a force from the ground that propels the player upward.
Why do we have seasons? Explain the difference between rotation and revolve. Ea
Earth's tilt and revolution causes seasons. Rotations causes day and night and takes 24 hours while a revolution takes 365 days.
A molecule of oxygen (O₂) and a molecule of water (H₂O) are both made up of atoms, but they are different types of substances. Explain how oxygen and water differ in terms of molecules and compounds, and why the chemical properties of each are unique.
Oxygen (O₂) is a molecule because it is made up of two oxygen atoms bonded together. Since it only has one element, it’s not a compound.Water (H₂O) is a compound because it is made up of two different elements: hydrogen and oxygen. The properties of water are different from the properties of oxygen because of the combination of the two elements.