Matter & Chem
Matter cannot be created or destroyed. What law is this?
Conservation of mass
What is the formula for speed?
Speed = distance ÷ time
What type of energy transfer occurs through direct contact?
Conduction
What is the cycle of a star’s life called?
Stellar life cycle
What do we call moving pieces of Earth’s crust?
Tectonic plates
How many atoms are in H₂O?
3 atoms (2 hydrogen, 1 oxygen)
What is acceleration?
Change in velocity over time
What happens to kinetic energy when temperature increases?
It increases
What diagram shows star brightness vs. temperature?
HR Diagram
What is evidence that plates move?
Fossils, earthquakes, volcanoes, matching coastlines
Burning wood is what type of change?
Chemical change
An object at rest stays at rest. Which law is this?
Newton’s First Law
What type of energy transfer occurs through a method of heat transfer where energy moves through the bulk movement of fluids (liquids or gases).
Convection
What force keeps planets in orbit?
Gravity
What are hurricanes, typhoons, and cyclones?
Tropical storms (same type, different locations)
What kind of change is melting ice?
Physical change
What is the difference between velocity and speed?
Velocity includes direction; speed does not
What type of energy transfer occurs through empty space?
Radiation
What is a large system of stars called?
Galaxy
How do humans impact groundwater?
Pollution and overuse
If you have 2 CO₂ molecules, how many total atoms are present?
6 atoms (2 carbon, 4 oxygen)
What does the x-axis of a distance-time graph represent?
Time
What Thermal Energy has electromagnetic waves?
Radiation
What provides most of Earth’s energy?
The Sun
What is the movement of energy through a food chain called?
Trophic energy flow