4th Grade Science Mastery: Big Energy Challenge!

Scarlett stretches a rubber band and holds it in place. The energy stored in the stretched rubber band is called _________ energy.

• kinetic

• potential

• chemical

• sound

Answer explanation

The energy stored in a stretched rubber band is called potential energy. This type of energy is related to the position or configuration of an object, unlike kinetic energy, which is associated with motion.

Fill in the Blank: Luna stretches a rubber band and then lets it go. Fill in the blank with the correct words. Word Bank: kinetic, potential, transferred, destroyed, heat, chemical, conduction, insulator, conductor, sound. When the rubber band is released, the energy becomes _________ energy.

• potential

• kinetic

• heat

• chemical

Answer explanation

When the rubber band is released, the stored potential energy is converted into kinetic energy, which is the energy of motion. Therefore, the correct answer is kinetic.

Mia is learning about energy in her science class. Her teacher explains that when you use a flashlight, the energy in the batteries changes form but is never created or _________. What word completes the teacher's explanation?

• transferred

• destroyed

• conduction

• conductor

Answer explanation

The 1st law of thermodynamics states that energy cannot be created or destroyed. This means energy can change forms but cannot simply vanish, making 'destroyed' the correct choice.

Tags

CCSS.RI.4.4

CCSS.RI.5.4

CCSS.RL.3.4

CCSS.RL.4.4

CCSS.RL.5.1

Abigail is making breakfast and uses a toaster to prepare her toast. Electrical energy is turned into _________ energy in the toaster.

• heat

• sound

• kinetic

• potential

Answer explanation

When using a toaster, electrical energy is converted into heat energy, which is the primary function of the appliance. Therefore, the correct answer is 'heat'.

When Michael kicks a soccer ball and it rolls across the field, the energy of the moving ball is called _________ energy.

• kinetic

• chemical

• potential

• heat

Answer explanation

The energy of moving objects is referred to as kinetic energy. This type of energy is associated with the motion of an object, distinguishing it from potential energy, which is stored energy.

Oliver is preparing for a camping trip and wants to power his flashlight. He brings along a battery, knowing it stores _________ energy for later use. Word Bank: kinetic, potential, transferred, destroyed, heat, chemical, conduction, insulator, conductor, sound.

• chemical

• kinetic

• heat

• sound

Answer explanation

A battery stores chemical energy for later use. This energy is stored in the form of chemical compounds and can be converted to electrical energy when needed.

Nora and Elijah are playing with bouncy balls. When their balls collide and bounce off each other, some energy is _________.

• conduction

• sound

• conductor

• destroyed

Answer explanation

When two balls collide, they create vibrations that produce sound energy. Thus, some energy is transformed into sound, making 'sound' the correct choice to fill in the blank.

Jackson touches a metal spoon that has been sitting in a pot of hot soup. The transfer of heat from the spoon to Jackson's hand by direct contact is called _________.

• conduction

• conductor

• insulator

• transferred

Answer explanation

The transfer of heat by direct contact is known as conduction. This process occurs when heat moves from a warmer object to a cooler one through direct touch, making 'conduction' the correct choice.

Grace is cooking soup and uses a wooden spoon to stir it. She notices that the handle of the spoon does not get hot. A wooden spoon is a good _________ because it does not let heat pass easily.

• conductor

• insulator

• conduction

• sound

Answer explanation

A wooden spoon is a good insulator because it does not allow heat to pass through easily, making it safe to handle when cooking. In contrast, a conductor would transfer heat quickly.

Kai is helping to set up a new lamp at home. He notices that the lamp's cord is made of copper wire. Fill in the blank: Copper wire is a good _________ because it allows electricity to flow.

• insulator

• conduction

• conductor

• heat

Answer explanation

Copper wire is a good conductor because it allows electricity to flow easily through it. Insulators, on the other hand, resist the flow of electricity, making 'conductor' the correct choice.