Show:
Properties of Matter
Motion
Newton's Laws and Forces
Energy
Earth and Space Science
100
List two ways to find the volume of an object.
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
What is the cause of the seasons?
The orientation of the earth's axis to the sun during the year.
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=6m/s and a Y-intercept= -12m

position=6m/s - 12m

200
Describe Newton's Second Law with forces, velocity and acceleration (the formula)
Force = Mass x acceleration
200
If the potential energy at the top of the hill is 50J, what is the kinetic energy at the bottom of the hill?
50J
200

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 what the velocity is doing in Newton's First Law of motion
v=0 m/s or constant motion
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

What are the main pieces of evidence for the Big Bang Theory?

Expanding universe, left over microwave radiation, and abundance of light elements (H and He).

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?

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 J and the KE at the bottom was found to be 2800 How much work was done by friction?

1700 J

400

What are stars mostly made of?

Hydrogen and helium

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 in a straight line, then turns around and goes 50 m in 8 seconds back on the same line of travel. What is the displacement of the car?

5 m

500

If a linebacker has a momentum of 450 (kg)(m/s) and hits a stationary linebacker and holds on and they continue as one pair with a velocity of 3.5 m/s, what is the final momentum of both linebackers together?

450 (kg)(m/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 heat

500

Why is the universe expanding at an accelerating rate?

Dark energy pushing the universe out in all directions