Energy transfer review

Energy can move from one place to another. Which example shows energy moving from one place to another

• ice cubes stay frozen in the freezer

• a baseball hits a baseball bat

• a lightbulb stays off

• Books sit on a shelf

Which statement explains why light from the sun can warm up water in a glass?

• light travels very fast

• light travels in a straight line

• water reflects light energy

• water absorbs light energy

a student tried to connect an electrical circuit as shown in the image. The student came across a problem, the lightbulb did not light up. How can the student redesign the electrical circuit so that the lightbulb will light up?

• The student can replace the wires with thicker wires

• The student can replace the steel nails with aluminum nails

• The student can connect a second battery to the first battery

• The student can connect the steel nails with a short piece of wire

A teacher creates a quiz game to use in her classroom but needs a method for each team to alert her when they have an answer. For each team, the teacher needs to use a buzzer, a light bulb, insulating wire, and a battery. What is the correct order of the initial and final types of energy in the circuit?

• solar, motion, light

• motion, sound, electrical

• electrical, light, sound

• solar, electrical, sound

Working in teams helps to make better products. A scientist who studies converting electricity to heat needed an engineer to help her with a project. Which engineer would make the best teammate on the project?

• An engineer who studies how to store energy

• an engineer who is building a new heating system for houses

• an engineer who is designing a new battery

• an engineer who is designing a new speaker system.

The photo shows a laser cutting a sheet of metal as the laser moves from one end to the other. A group of students made a table of examples of different types of energy shown in the photograph. Which answer best completes the student's table?

• The metal turns red

• Pieces of metal hit the floor

• sparks hit the floor

• the laser produces a beam of light

Devices work differently and are designed to serve different purposes. Match the device to how it converts electrical energy to light or sound energy or both!

John and his grandpa were camping. Grandpa took a stick and started rubbing it against another stick really fast, in a circular motion. After a while, the stick started to get hot and smoke came from it. Soon, a fire started from grandpa rubbing the sticks together. Explain the transfer of energy happening in this scenario!