Ecosystems
What is the term for all living and non-living parts of an environment?
Ecosystem
What is the chemical symbol for water?
H20
What is the chemical symbol for water vapor?
H20 (g)
What is the formula for speed?
Speed=Distance divided by time
What piece of equipment is used to measure temperature?
Thermometer
What process do plants use to make their own food?
Photosynthesis
What is the pH range of acids?
0-6
What is the pH range of acids?
0-6
What does a flat line on a distance time graph mean?
No movement
What state of matter has a definite shape and volume?
Solid
What type of consumer only eats meat?
Carnivore
What is the difference between an element and a compound?
Element = 1 type of atom
Compound = 2+
What is the difference between weather and climate?
Weather is short-term atmospheric conditions
Climate is long term-patterns
What is acceleration?
A change in velocity over time
What is the main source of energy for earth?
The sun
What does biodiversity mean?
Variety of life in an ecosystem
What does a chemical change produce?
A new substance
What kind of front causes thunderstorms?
Cold front
What is Newton's second law of motion?
Force-Mass x Acceleration (F=ma)
What is the difference between a hypothesis and a theory?
A hypothesis is an educated guess
Theory is a well-tested explanation
Name 2 abiotic and 2 biotic factors in an ecosystem
Abiotic- Water, sunlight
Biotic- Tree, deer
What is the Law of Conservation of Mass, and how does it apply to chemical reactions?
The Law of Conservation Mass states that Mass cannot be created or destroyed in a chemical reaction. This means the total mass of the reactants equals the total mass of the products.
Name 3 greenhouse gases
Carbon dioxide, methane, and water vapor
A car goes 100 km in 2 hours. What is its average speed?
50 km/h
Why do scientists repeat experiments?
To check for accuracy and make sure results are reliable