Energy JeopardyEnergy Basics

Calculating KE & PE

Work & Power

Problem Solving

Grab Bag

10 10 10 10 5

20 20 20 20 10

30 30 30 30 15

40 40 40 40 20

50 50 50 50 25

Energy Basics – 10 points

What unit is energy measured in?

Energy Basics – 20 points

What two things does kinetic energy depend on?

Energy Basics – 30 points

What three things does gravitational potential energy depend on?

Energy Basics – 40 points

Name two types of potential energy.

Energy Basics – 50 points

Name three types of nonmechanical energy.

Calculating KE and PE – 10 points

What is the kinetic energy of a 5 kg cat running at 5 m/s?

Calculating KE and PE – 20 points

A 10 kg dog is sitting on a table 250 cm high. If the ground is considered

to be at a height of 0, what is the dog’s gravitational potential energy?

Calculating KE and PE – 30 points

Frosty the Snowman is bounding through the forest. Suddenly a

blizzard hits! The snowfall causes Frosty’s mass to double and his speed to halve. How does his kinetic energy

change as a result?

Calculating KE and PE – 40 points

A 10 kg wreath goes sailing through the air at 5 m/s, 3 m off the ground. A 150 kg pine tree is floating in place 0.5

m off the ground. Which has more mechanical energy?

Calculating KE and PE – 50 points

The acceleration due to gravity on the moon is 1.67 m/s^2. Which has more gravitational potential energy – a 100

kg person 50 m off the Earth’s surface, or a 200 kg lion 100 m off the

moon’s surface? (You must justify your answer to get points.)

Work and Power – 10 points

What TWO things can “W” stand for in problems for our energy unit?

Work and Power – 20 points

What is the difference between work and power?

Work and Power – 30 points

You lift a 20 N box 2 m off the ground. How much work did you do?

Work and Power – 40 points

Rudolph can lift 400 g by 5 m off the ground in 0.5 s. Mrs. Claus can lift 56 kg by 2 m off the ground in 15 s. Who

is more powerful?

Work and Power – 50 points

Billy Jean lifts a 10 kg chinchilla 5 m off the ground over the course of 1.5 seconds. Penny Lane lifts a 25 kg chinchilla 2 m off the ground in 1

second. Who does more work? (You must justify your answer.)

Problem Solving – 10 points

A 5 kg menorah falls from a shelf 3 m above the ground. How fast is it

moving right before it hits the ground?

Problem Solving – 20 points

A 30 kg elf runs up the stairs to Santa’s workshop. If the stairs are 10 m high, and the elf runs up them in 15 seconds, how powerful is the little elf?

Problem Solving – 30 points

How much kinetic energy does a 2000 kg car have when it moves 100

km/hr?

Problem Solving – 40 points

A 500 kg roller coaster car starts out at a peak of 100 m, zooms down, then goes back up another peak. If the car

loses 80,000 J of energy due to friction as it descends, what is the maximum possible height of the

second peak?

Problem Solving – 50 points

A 50 kg Grinch rolls down a 50 m hill starting from rest. How fast will he be

moving when he’s 10 m from the ground?

Grab Bag – 5 points

Which statement is correct?

“I’m so excited about physics, I need to lay down for a while.”

“I’m so excited about physics, I need to lie down for a while.”

Grab Bag – 10 points

In which of the following art forms does Ms. DeFord have NO training?

(Not counting elementary school classes…)

Instrumental musicClassical voice

Visual artsBallroom dance

Grab Bag – 15 points

Name all of the arts conservatories here at OCHSA. (No pulling out

programs or other items to look at!)

Grab Bag – 20 points

The musical Sweeney Todd gathered a lot of interest when it was made into

a movie starring Johnny Depp in 2007. Who composed the original

musical?

Grab Bag – 25 points

Your entire group must work together to create a 60-second presentation

about energy at the end of class today. The presentation should be

both entertaining and informative and can include acting, singing, dancing,

drawing, and/or dramatic reading.