Worksheets9th grade mid-term
Total questions: 71
Worksheet time: 3hrs 49mins
Which of the following is an example of convection?
Touching a hot pan.
When the AC or heater changes the temperature.
When a car engine turns hot after being turned on.
When you are making soup and the water is rising and lowering.
Transfer of thermal energy through "flow" of liquids and gases
conduction
convection
radiation
Which of the following is a conductor?
glass
rubber
plastic
copper
Three of the following items are resistors/receivers. Which item does NOT belong?
speaker
battery
motor
light bulb
In which of the following circuits will all of the remaining light bulbs go out if bulb 3 burns out?
Which object does NOT conduct electricity?
copper wire
iron nail
salt water
wood
Irene bought a new house and has decided to rewire it. She wants to be able to turn
some lights off and have the others remain lit. What type of circuits should she use and
why?
She should use parallel circuits because when one light turns off, the other lights remain lit.
She should use series circuits because when one light turns off, the other lights remain lit.
She should use parallel circuits because when one light turns off, the others turn off, too.
She should use series circuits because when one light turns off, the others turn off, too.
Which of the following would be a good conductor of electricity?
plastic
rubber
cotton
iron
When _______________ travels through a
conductor, a magnetic field is created
current
a magnetic field
neutrons
Electric currents produce _____________
electron clouds
magnetic fields
sound waves
What is the KE of a football which has a mass of 0.8 kg and is kicked at a velocity of 10m/s?
80 J
3.2 J
160 J
40 J
What is the kinetic energy of a zorb and human with a total mass of 90Kg rolling at 10m/s?
3,700J
900J
4,500J
6,500J
What is the kinetic energy of a 4kg shotput thrown with a velocity of 13m/s?
676 J
3.25 J
17J
338 J
An explosion of gas from a Hawaiian volcano blows a rock into the sky. The rock has 2000J of kinetic energy. What was its mass if the rock had a velocity of 20m/s?
200Kg
20,000Kg
10Kg
200Kg
You serve a volley ball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30m/s. How much kinetic energy does the ball have?
1890 J
3780 J
945 J
31.5 J
A golf pro swings his driver which has a mass of 0.75Kg at a velocity of 60 m/s. Calculate the kinetic energy of the club.
2700 J
16.9 J
1350 J
45 J
A rabbit with a mass of 3kg walks at a speed of 0.5m/s. Calculate its kinetic energy.
0.5 J
0.75 J
0.255 J
0.375 J
An explosion of gas from a Hawaiian volcano blows a rock into the sky. The rock reaches 100 meters in height. It has a mass of 5 kg. How much potential energy does the rock have before it begins falling back to earth?
500J
50J
4,900 J
49.05J
Pushing a child on a swing is easier than pushing an adult on the same swing
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
None of them
