Matter
What state of matter has a definite shape and volume?
Solid
What force pulls objects toward Earth?
Gravity
What type of energy is energy of motion?
Kinetic energy
What is the basic unit of life?
Cell
What is an organism that makes its own food called?
Autotroph
What type of mixture is evenly mixed?
Homogeneous
What force slows objects down when they rub together?
Friction
What type of energy is stored energy?
Potential energy
What controls what enters and exits the cell?
Cell membrane
What is an organism that eats other organisms called?
Heterotroph
Density
What is the net force if forces are balanced?
What type of energy is in a stretched rubber band?
Elastic potential energy
⭐What part of the cell contains DNA?⭐
Nucleus
What is a one-celled organism called?
Unicellular
If an object sinks in water, what does that tell you about its density?
It is more dense than water.
Do balanced or unbalanced forces cause motion?
Unbalanced forces
It is conserved (not created or destroyed)
What organelle produces energy for the cell?
Mitochondria
⭐Why is variation important for survival?⭐
It helps organisms survive environmental changes.
Name TWO signs that a chemical change has occurred.
any two: color production, gas production, light production, temperature change, precipitate formation
What is Newton's Third Law?
For every action, there is an equal and opposite reaction.
What energy transformation occurs while using a flashlight?
chemical -> electrical -> light
Compare prokaryotic and eukaryotic cells.
Prokaryotic = no nucleus; Eukaryotic = has nucleus
Explain how variation can be both helpful and harmful.
Some traits improve survival, others may decrease it depending on the environment.