Scientific Method
What is the first step of the scientific method?
Ask a question
What tool measures temperature?
Thermometer
What is data?
Information collected
What state has a definite shape?
Solid
Smallest unit of matter?
Atom
Living factors are called?
Biotic
Basic unit of life?
Cell
Name one Earth sphere and explain it
Atmosphere, hydrosphere, geosphere, biosphere
What is a hypothesis?
A testable prediction
Why wear goggles in a lab?
Protect eyes
What type of graph shows change over time?
Line graph
DAILY DOUBLE!!!
What is a Homogenous mixture?
Type of mixture where the composition is uniform throughout, meaning every part of it looks and has the same properties.
What does a chemical symbol represent?
An element
What causes seasons?
Earth’s tilt
Nonliving factors?
Abiotic
Prokaryotic cells lack what?
Nucleus
What is resource management?
Using resources wisely
DOUBLE JEOPARDY!!!!
Identify the independent variable in an experiment about plant growth and sunlight
Amount of sunlight
Which tool measures liquid volume accurately?
Graduated cylinder
DAILY DOUBLE!!!
What goes on the x-axis?
Independent variable
Name a physical property
Mass, volume, color, etc.
In the formula 2H₂O, how many total hydrogen and oxygen atoms are present? Explain how you know.
Hydrogen = 4 atoms, Oxygen = 2 atoms.
What keeps planets in orbit?
Gravity
Why is sunlight important in ecosystems?
Energy source
Why are prokaryotic cells typically smaller and simpler than eukaryotic cells? Explain using structure.
Prokaryotic cells lack a nucleus and membrane-bound organelles, so they have fewer structures and are simpler, which keeps them smaller.
Example of renewable resource?
Solar energy etc.
Why is it important to repeat experiments?
To ensure reliable results
Why should chemicals never be tasted?
They may be harmful
Why organize data in tables?
Easier to analyze patterns
Why does oil float on water?
Lower density
DAILY DOUBLE!!
Difference between element and compound?
Element = one type of atom; Compound = two or more bonded
A volcanic eruption releases ash into the air and lava onto land. Explain how at least two Earth spheres interact during this event.
The geosphere releases lava and ash, which enter the atmosphere. Ash can block sunlight and affect air quality, and lava can impact the biosphere by destroying habitats.
What happens if a key species is removed?
Ecosystem imbalance
A scientist finds a cell with a nucleus and mitochondria. Is it prokaryotic or eukaryotic? Explain your reasoning.
Eukaryotic, because only eukaryotic cells have a nucleus and organelles like mitochondria.
A student changes two variables in an experiment. What is the problem?
Cannot determine which variable caused the result
A line graph shows distance increasing faster over time. What does this tell you about the object’s motion? Explain
The object is speeding up, because the slope is getting steeper, meaning distance increases more quickly over time.
A graph shows a steady increase—what does this mean?
The variable is increasing consistently
DAILY DOUBLE!
Difference between physical and chemical change?
Physical = no new substance; Chemical = new substance forms
DAILY DOUBLE!
A student says CO₂ has the same number of atoms as O₂. Do you agree? Explain.
No. CO₂ has 3 atoms (1 carbon + 2 oxygen), while O₂ has only 2 oxygen atoms.
DAILY DOUBLE!!
How can an Igneous rock turn into a Metamorphic rock?
Through heat, pressure, weathering
Explain “survival of the fittest”
Best adapted organisms survive and reproduce
DAIL DOUBLE!
Explain how the structure of eukaryotic cells allows them to perform more complex functions than prokaryotic cells.
Eukaryotic cells have specialized organelles (like the nucleus and mitochondria) that perform specific jobs, allowing more complex processes.
DAILY DOUBLE!!!
How do Earth spheres interact in terms of matter and energy?
Matter and energy move between them