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WorksheetsHunger Games - 8th Grade Science (Task #2)
Total questions: 10
Worksheet time: 50mins
What results when energy is transformed while juggling three bowling pins?
electrical energy
heat energy
mechanical energy
sound energy
What energy transformations occur when a fan is turned on?
electrical to kinetic to sound
electrical to kinetic to thermal
potential to electrical to sound
potential to electrical to mechanical
What would happen to an inflated balloon if you placed it in the refrigerator overnight?
It would get larger in size because the air molecules inside the balloon speed up and spread out until the balloon cools.
It would get larger and pop because the molecular motion of the air inside the balloon continuously increases.
It would get smaller in size because the air molecules slow down and contract when cooled.
It would get smaller in size because the air molecules shrink in size.
In a closed system, a group of objects moves energy only among themselves. In which part of the light bulb system is electrical energy being converted into light energy?
Part A
Part B
Part C
Part D
Your science teacher has asked you and your best friend to help him move the science textbooks to a storage room. You have a cart (A) filled with books and your best friend’s cart (B) is empty. Which cart will accelerate faster if you both push your cart with the same force and why?
Cart A; has a greater mass
Cart B; has a greater mass
Cart A; has a lesser mass
Cart B; has a lesser mass
Which choice BEST describes the motion of the car represented by the graph?
acceleration
constant acceleration
deceleration
constant deceleration
Two students leave the same school at the same time to walk home. They both walk at 3 km/h for 15 minutes and then 2 km/h for 5 minutes. However, they do not end up at the same house. Why did the two students not end up at the same house?
They had the same velocity.
They had different velocities.
They had the same rate of speed.
They had a different rate of speed.
Which of the following creates the strongest electrical field/force?
adding positive charges
adding negative charges
reducing positive charges
reducing negative charges
Which of the following arguments explains why astronauts float when they are on the moon?
The moon has a greater gravitational pull than Earth.
Astronauts have less mass on the moon.
Earth has a greater gravitational force that the moon.
Astronauts have more mass on the moon.
After completing an investigation of how distance affects the strength of electric forces, you graphed your data. What conclusion can you draw from your data?
The strength of the electric field is strongest at a long distance.
The strength of the electric field is strongest at a short distance.
The strength of the electric field is weakest at both ends of the graph.
The strength of the electric field is strongest at both ends of the graph.
