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Unit 3 Energy Review

Total questions: 25

Worksheet time: 20mins

Name
Class
Date
1.

Imagine this! Abigail, Aria, and William are having a thrilling skateboard race in the park. As Abigail zooms downhill, some of the energy of her skateboard is

a)

a. Kinetic

b)

b. Potential

c)

c. Kinetic and some is potential

d)

d. Destroyed

2.

Imagine this! Jackson, Benjamin, and Elijah are having a blast in their science class. They're up to something exciting. They wrap a wire multiple times around an iron nail and then connect it to a battery. Can you guess what happens to the nail in this electrifying scenario?

a)

a. The nail suddenly gains a negative charge.

b)

b. The nail becomes a magnet, attracting other iron items like paper clips.

c)

c. The nail mysteriously gains a positive charge.

d)

d. The nail starts repelling other iron items like paper clips.

3.

Grace, Luna, and Ava are having a fun science day! They're helping their friend Elijah with a chemistry experiment. They're trying to figure out the new mass number when an atom of sodium combines with an alpha particle. Can you join their science adventure and help them out?

a)

a. 13 amu

b)

b. 15 amu

c)

c. 25 amu

d)

d. 27 amu

4.

During a thrilling science experiment, Zoe, Henry, and Noah stumbled upon a sample of radioactive uranium. As they observed its decay, they noticed it transformed into thorium. Can you help them figure out what particle was emitted during this exciting process?

a)

a. An alpha particle or a helium atom

b)

b. A beta particle or a hydrogen nucleus

c)

c. An alpha particle or a helium nucleus

d)

d. A gamma particle or a helium nucleus

5.

Maya, Sophia, and Olivia are on a mission to understand the mysteries of smoke detectors! They find out that smoke detectors contain a substance called americium-241. If their smoke detector initially contains 1 gram of americium-241, can you help them figure out how much of it will still be there in 432 years?

a)

a. 0.5 g

b)

b. 1.0 g

c)

c. 1.5 g

d)

d. 2.0 g

6.

Emma, Daniel, and Liam are on a thrilling adventure to create their own electricity for a science project. Which of the following exciting methods could they use to light up their world?

a)

a. Daniel, with a twinkle in his eye, rotates a coil of copper wire between two powerful magnets.

b)

b. Emma, with a determined look, connects a wire between a copper and zinc strip sitting in a beaker of water.

c)

c. Liam, with a grin, connects a wire to the (+) positive end of a battery and the other end to a light bulb.

d)

d. Emma, with a spark of excitement, connects a wire to the (-) negative end of a battery and the other end to a light bulb.

7.

Imagine Nora, David, and Evelyn are time-traveling archaeologists on a thrilling adventure! They've stumbled upon an ancient artifact made of carbon-14 in a forgotten civilization. To unlock its secrets, they need to estimate its age. If they know the half-life of carbon-14, they can solve this mystery. Can you help them? What is the half-life of carbon-14?

a)

a. 5000 years

b)

b. 5700 years

c)

c. 10000 years

d)

d. 11400 years

8.

Imagine this! Michael, Evelyn, and Charlotte are having the time of their lives at a thrilling amusement park. They are at the top of a gigantic roller coaster, their hearts pounding with excitement. As the roller coaster starts its thrilling descent downhill, which type of energy is being converted into kinetic energy?

a)

a. Electrical energy

b)

b. Potential energy

c)

c. Chemical energy

d)

d. Thermal energy

9.

Arjun, Noah, and Evelyn are having a lively debate about nuclear energy for their science project. They are trying to figure out why it's such a big deal to dispose of radioactive waste. Can you help them understand the main reason for this challenge?

a)

a. The waste has a low electrical charge

b)

b. The waste has a high electrical charge

c)

c. The waste products have a long half-life

d)

d. The waste products have a short half-life

10.

Aiden, Nora, and Abigail are on a thrilling adventure in their science class. They've stumbled upon a battery, a rock, and a magnet. They're buzzing with excitement as they try to figure out which of these mysterious objects holds the MOST potential energy. Can you help them solve this riddle?

a)

a. Battery (Aiden's discovery)

b)

b. Rock (Nora's find)

c)

c. Magnet (Abigail's treasure)

d)

d. A random light bulb

11.

Maya, Grace, and Kai are having a blast at the amusement park, watching a roller coaster whizz by. They start discussing the law of conservation of energy. According to this law, what happens to the total amount of energy for the roller coaster system?

a)

a. The roller coaster loses most of its energy as friction

b)

b. The total amount of energy for the roller coaster system stays the same

c)

c. The potential energy of the roller coaster is always greater than its kinetic energy

d)

d. The kinetic energy of the roller coaster is always greater than its potential energy

12.

Imagine Luna, Henry, and Priya are on a thrilling adventure in a futuristic science lab. They stumble upon a mysterious machine that can split the nucleus of a large atom into two smaller atoms. Can you help them remember the name of this fascinating process?

a)

a. Fusion

b)

b. Friction

c)

c. Fission

d)

d. Binary multiplication

13.

During a thrilling science experiment, Ethan, Hannah, and Jackson turned into mini scientists to explore the fascinating world of heat transfer by convection. Can you guess which situation they discovered as an example of transferring heat by means of convection?

a)

a. The sun sending its warm hugs to the earth

b)

b. Jackson wrapping himself in a cozy sweater to fight the cold

c)

c. Hannah accidentally picking up a sizzling hot pan from the oven

d)

d. Ethan playing detective with the weather patterns outside

14.

Maya, Charlotte, and Luna are having a friendly competition to see who can finish their science project about electrical resistance first. Maya is stuck on a tricky question and needs to choose the false statement regarding resistance. Can you help her out?

a)

a. Longer wires have less resistance

b)

b. Electrical resistance produces heat

c)

c. Resistance slows the flow of current

d)

d. The larger the diameter of the wire, the less resistance

15.

Jackson, Ava, and Charlotte are having a debate about the best type of oven to buy for their new apartment. They are confused between a convection oven and a regular oven. What is the key difference between a convection oven and a regular oven that they should consider?

a)

a. Circulates the hot air

b)

b. Cooks at higher temperatures

c)

c. Irradiates the food at the same time

d)

d. Sends heat from the inside of the food to the outside

16.

Zoe, Abigail, and Scarlett are having a heated debate about the heating curve of a mysterious substance they discovered in their chemistry class. What is the MOST accurate conclusion they can make about the vaporization of the substance represented by the heating curve?

a)

a. Heat of fusion equals heat of vaporization

b)

b. The melting point is half the boiling point

c)

c. It takes the substance longer to vaporize than it does to condense

d)

d. It requires much more energy to vaporize the substance than to melt it

17.

Charlotte, Kai, and Oliver are having a debate about nuclear science applications. Michael wants to join the conversation and focus on a beneficial application of nuclear science. Which of the following should he choose?

a)

a. Nuclear weapons

b)

b. Nuclear testing

c)

c. Magnetic resonance imaging (MRI)

d)

d. Nuclear waste from nuclear power plants

18.

What is the current drawn if the voltage is 9V and the resistance is 1.5 ohms?

4 lines
19.

What type of circuit has a single path for electrons, decreases current when additional resistors are added, and has the same current in each resistor?

4 lines
20.

Abigail, Mason, and Lily are having a friendly competition to see who can build the best circuit. Abigail's circuit has four light bulbs, while Mason's has three light bulbs. How does the intensity of Abigail's four light bulb circuit compare with the intensity of Mason's three light bulb circuit?

a)

a. The circuit is not operational

b)

b. It is lower in intensity

c)

c. It is higher in intensity

d)

d. It has the same intensity

21.

What type of circuit temporarily separates electrons at a 'fork in the road' and then brings them back together?

4 lines
22.

Imagine Sophia, Abigail, and Nora are on a thrilling adventure in the world of nuclear reactions. They stumble upon a mysterious equation, H + je-1e, etched on an ancient stone. Can you help them decipher what this equation represents in the context of nuclear reactions?

a)

a. The disintegration of an alpha particle

b)

b. The origin of a positron from a proton in the nucleus

c)

c. The origin of a beta particle from the nucleus of an atom

d)

d. High energy electromagnetic radiation called gamma rays

23.

Imagine Ava, Scarlett, and David are super cool scientists on a mission to discover which liquid cools down the fastest. They have a race against time and temperature! According to the specific heat data, which liquid will chill out to 35°C first?

a)

a. Water

b)

b. Gasoline

c)

c. Ethanol

d)

d. Ammonia

24.

Arjun, Abigail, and Luna are on a thrilling scientific adventure, studying the mysterious cooling curve of an alien substance they discovered. At which point on this cooling curve does the alien substance begin to transform, starting to melt?

a)

a. Point P

b)

b. Point Q

c)

c. Point R

d)

d. Point S

25.

Imagine this, Ava, Abigail, and Hannah are on a thrilling mission to build a super powerful electromagnet that can pick up a mountain of paper clips! What magical tweaks could they make to their electromagnet to increase its paper clip lifting power?

a)

a. Transform the wire into a long, winding snake

b)

b. Perform a magic trick and make the nail in the center of the wire disappear

c)

c. Increase the number of wire loops around the nail, like a spiral staircase

d)

d. Spread the loops of wire apart on the nail so they don't touch, like a slinky