Displacement using a graduated cylinder and water
and
measuring with a ruler and using a formula
100
What are the units for Distance and Time?
Meters and Seconds
100
What happens to an astronauts weight and mass as she travels from the earth to the moon?
The mass is the same but the weight will decrease because the moon has less gravity.
100
Explain the Law of Conservation of mass/energy.
Mass and energy cannot be destroyed, they can transform into each other but the total amount never changes.
100
A notecard was placed on a cup of water and turned upside down. Why did the water stay in the cup?
The upward force of air is greater than the downward force of the weight of the water and notecard.
200
Explain what happens to the matter in a log when it is burned.
The amount of matter doesn't change but some of the matter is transformed into something else - other matter like soot and ash, and energy like heat and light.
200
Write a slope equation that has a slope=6 and a Y-intercept= -12
position=6m/s - 12
200
Describe Newton's Second Law with forces, velocity and acceleration.
The forces are unbalanced, velocity is changing and the acceleration is not zero.
200
What is the velocity of a 32 kg dog running with 5600 J of kinetic energy?
18 m/s
200
Explain what Hubble's Law tells us about the universe.
The universe is expanding and galaxies further away are moving away faster.
300
What is the density of a 100 gram stone with a volume of 4 cm^3?
25 g/cm^3?
300
If you travel 18m/s for 6 seconds, how far did you travel?
108 meters
300
Describe Newton's First Law in terms of the object its self. (Think inertia video)
Objects are lazy
300
A 0.400 kg toy truck rolls down a 3.00 meter ramp from a height of 0.800 meters. Calculate the potential energy of the truck at the top of the ramp.
3.14J
300
According to the Big Bang theory, what was the universe like in the first second after the Big Bang?
There was infinite density, violence, and rapid expansion.
400
Gold has a density of 19.3 g/cm^3 and nickel has a density of 7.81 g/cm^3. The two metals have the same mass. Which has a larger volume and why?
Nickel because it has a lower density, there has to be more volume to have the same mass.
400
If the equation of a line is Position=-2m/s + 40m
what is the velocity of the object?
2 m/s in the negative direction or -2m/s
400
Describe Newton's Third Law.
The forces between 2 objects are equal but in opposite directions and happen at the same time.
400
If the Potential energy at the top of a roller-coaster is 4500 kg x m What is the KE at the bottom?
4500 kg x m
400
What is the evidence for the Big Bang theory from our presentations?
Microwave radiation and Hubble's law
500
Two clay balls are of equal size, shape and weight. One is flattened. What happens to the mass, weight and area?
The mass and weight are the same but the area of the flattened one has been changed.
500
A car has traveled 45 m in 9 seconds. What is the speed?
5 m/s
500
What is the momentum of a 128 kg rock rolling down a cliff at 12 m/s?
1536 kgm/s
500
If you calculated the PE at the top of a rollercoaster to be 3200 (kg)(m) and KE at the bottom was 2900 (kg)(m), Where did the energy go?
Into friction, sound and movement of the track
500
Why is the universe expanding at an accelerating rate?
Dark energy pushing the universe out in all directions