Scientific Method and Measurement
Which step of the scientific method involves forming an educated guess?
Hypothesis
Newton's First Law is also called the law of
Inertia
Two students with the same mass reach the top of a hill using different paths ( one long, one short). Who has the greater gravitational potential energy?
Both students have the same GPE
What does temperature measure?
Average kinetic energy of particles in a substance
A student tests how different soil types affect plant growth. She changes only the soil type and measures plant height. What is the dependent variable?
Plant Growth
According to Newton’s Second Law, force equals
mass × acceleration
A skier with a mass of 50 kg stands at the top of a 30 m hill. What will happen to their gravitational potential energy as they ski downhill?
It decreases
When ice melt, does it lose or gain energy?
Gain energy
Why do scientists publish and communicate their experiment results to the scientific community?
So that others can repeat the investigation and validate the results
Momentum depends on an object's
Mass and velocity
What is the law of conservation of energy?
Energy is never created or destroyed
Which direction does heat move?
Hot to cold
What type of graph would be best to show the time it takes for a car to go from 0 to 100 kph (kilometers per hour)?
Line Graph
How is acceleration affected when the net force on an object is doubled, and mass is constant?
Acceleration is doubled
A student pushes on a heavy wall but it does not move. How much work is done on the wall?
No work is done
What is heat transfer by direct contact called?
Conduction
How many meters is equal to 0.5 kilometers?
500 meters
If mass stays the same and speed doubles, momentum will:
Double
Which simple machine with a rope and wheel, changes the direction of force?
In what medium does convection occur in?
Fluids! Liquids and gases.