Matter and Energy
What state of matter has a definite shape and volume?
Solid
What force pulls an object towards Earth
Gravity
What causes seasons on Earth?
Earth's Tilt
What are living factors in an ecosystem called?
Biotic
What is one living thing called?
Organism
Give an example of a heterogeneous mixture
Trail mix, salad.....(something that has different visable parts)
If forces are equal and opposite, what happens to the motion?
Nothing! It's balanced
Which object has the biggest effect on tides?
The moon
What type of relationship is a bee and a flower?
Mutalism
What is the basic unit of life?
Cell
What type of mixture is mixed evenly throughout?
Homogeneous mixture (solution)
What type of energy is stored energy?
Potential Energy
Explain why spring tides have higher highs and lower lows.
Sun, Moon, Earth aligned → stronger gravity pull
Why do organisms compete in ecosystems?
Limited resources
What is the difference between unicellular and multicellular?
one cell vs many cells
Compare a heterogeneous mixture and a pure substance, including how you could tell them apart in a lab.
Heterogeneous = not evenly mixed, visible parts; Pure substance = one type of matter, consistent throughout
Explain how energy changes form on a roller coaster from the top of a hill to the bottom.
Potential → kinetic energy
Compare Earth’s inner core and outer core, including state of matter and function.
Inner = solid, hottest; Outer = liquid
A drought reduces water supply. Predict how this affects organisms and competition.
More competition, fewer organisms survive
How can variation help a population survive environmental change?
they adapt and gain skills needed for survival.
A substance bubbles and changes temperature during a reaction.
Chemical change
A box is pushed right with 10 N and left with 6 N. What is the net force and direction?
4N to the right (unbalanced)
Name the four Earth systems.
Biosphere, hydrosphere, atmosphere, and lithosphere.
Explain how resource management can impact ecosystems and human survival.
Reduces pollution, improves food/water access, supports ecosystems
Compare prokaryotic and eukaryotic cells AND explain why this difference matters for organism
Prokaryotic- No Nucleus
Eukaryotic - Nucleus