Photosynthesis & Cells
What is the main pigment in plants that captures sunlight?
Chlorophyll
What is a producer in an ecosystem?
An organism that makes its own food, like a plant
What is the force that pulls objects toward Earth?
Gravity
What layer of Earth do we live on?
Crust
First step of the scientific method?
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What two raw materials do plants need for photosynthesis?
Carbon dioxide and water
What is the difference between a food chain and a food web?
A food chain shows one path of energy flow; a food web shows multiple paths
What is Newton’s First Law of Motion also called?
Law of Inertia
What causes earthquakes?
Movement of tectonic plates
What is a hypothesis?
A testable prediction
What cell organelle is responsible for photosynthesis?
Chloroplast
What type of organism breaks down dead matter?
Decomposers, like fungi and bacteria
If you push a box with more force, what happens to its acceleration?
It increases
What type of rock is formed from cooled lava?
Igneous rock
Difference between an independent variable and dependent variable?
The independent variable is what you change; the dependent variable is what you measure
What are the products of photosynthesis?
Glucose and oxygen
What happens to energy as you move up the food chain?
Decreases
Explain Newtons Third Law of Motion
Action-Reaction
What is the name of the process where rocks are broken down into smaller pieces?
Weathering or erosion
Why is it important to have a control group in an experiment?
To compare results and see the effect of the variable
What part of the plant allows gases to enter and exit during photosynthesis?
Stomata
What is an example of a mutualistic relationship?
Bees pollinating flowers, both benefit
What two factors affect the force of gravity between two objects?
Mass and distance
What is the main cause of ocean tides?
The Moon’s gravitational pull
What should scientists do if their hypothesis is incorrect?
Revise it and test again