Nature of Science
Bar Graph
If a car has a positive acceleration, what is it doing?
Speeding Up
What is the strongest type of friction?
static
What is the unit for work?
Joules
Which type of electromagnetic energy waves have the highest energy/frequency?
gamma
Which variable is found on the horizontal axis of a graph?
Independent Variable
What are 3 examples of vector quantities?
velocity
acceleration
weight
force
etc.
Which law says that an object in motion will stay in motion and an object at rest will stay at rest?
Newton's 1st Law
What kind of thermal transfer involves liquids or gases heating up, rising, cooling, and sinking?
Convection
What is the term for the highest point on a wave?
crest
What is the definition of a control group?
The group that you compare everything else to, the "normal"
What is the measure of the amount of distance traveled in a certain direction in a certain period of time?
Velocity
Planet McMasterium has a gravitational acceleration of 10.8 m/s2. Which planet would you weigh more on- Earth or McMasterium?
McMasterium
Explain one advantage and one disadvantage to using nuclear energy?
pros- less pollution, saves lives, new technology
cons- meltdowns, don't know how to dispose of waste, nuclear weapons
What is the equation used to calculate the wavelength of a wave?
c= lambda x nu
Mrs. Waldschmidt wanted to test which kind of bird seed the birds liked best. She used 3 different types of seed and measured the number of days that it took for the birds to eat all the seed she put out.
What is the independent variable?
What is the dependent variable?
Ind. is the type of seed
Dep. is the number of days it took them to eat the seed
What is the difference between distance and displacement?
Displacement is only the change from start to finish and includes a direction, distance is the total distance from start to finish and doesn't include direction
If I am pushing a bookshelf and increase my force on the bookshelf, what happens to the acceleration on the bookshelf?
the acceleration increases
Leroy the cat is trying to escape the apartment, and to do so he pushes a box towards the open window so he can jump up and escape. He uses 30 N to push the box 5 meters, how much work did Leroy do?
150 J
What is the unit for frequency?
Hertz
If a block of iron has a density of 16 kg/L and a volume of .5 L, what is the mass of the block?
8 kg
Jess walked 3 km north, then turned west and walked 4 km west. What was Jess's displacement?
5 km NW
Which one of Newton's laws is demonstrated by the following situation?
A rocketship’s fuel ignites and the rocket takes off
Newton's 3rd law
A ball is rolling down a hill. When does the ball have the most kinetic energy?
at the bottom of the hill
A wave with a frequency of 10 Hz is traveling at a speed of 20 m/s. What is the wavelength of the wave?
2 meters