All 4th Grade Science Resources
Example Questions
Example Question #1 : Observe How Energy Is Transferred By Light
The bouncing of light off an object is called what?
Reflection
Infrared
Reversal
Refraction
Reflection
Reflection is the term used to describe light bouncing off of an object. When the light touches an object that is smooth and shiny, it will reflect at the same angle at which it hit the surface of the object. Refraction describes the bending of a light ray when it enters a medium of a different speed. Infrared light refers to a type of light rather than the behavior of light.
Example Question #31 : Transfer Of Energy
Which of the following objects would better allow light to pass through?
The mason jars would better allow light to pass through because they are clear. The sample of fluorite would not allow light to pass through because it is opaque. Opaque objects reemit light waves from the surface back to our eyes rather than allowing it to pass through the object.
Example Question #1 : Observe How Energy Is Transferred By Light
This picture is an example of which term?
Reflection
Refraction
Revision
Absorption
Refraction
This photo is an example of refraction. When light travels from water into the air, it changes direction because it slows down. Keep in mind that refraction is the bending of a light ray when it enters a medium of a different speed. Refraction occurring in water causes the object in the water to appear uneven or as if the portions in and out of the water are different in size.
Example Question #3 : Observe How Energy Is Transferred By Light
The light we see with our eyes is called _____________.
Ocular
Infrared light
Visible light
Sunlight
Visible light
We can view light with our naked eyes on a spectrum. This spectrum is called visible light. Visible light rays reflect off of the object that you are viewing, so your brain can then process and understand what you are seeing.
Example Question #1 : Observe How Energy Is Transferred By Light
What is white light?
A shiny surface that reflects light
All pastel colors mixed together
All visible colors at equal intensity
Anything that makes light
All visible colors at equal intensity
White light is colorless, ordinary daylight. It contains all of the wavelengths of visible light at an equal intensity at the same time, which creates beams of white light when focused on a single spot.
Example Question #1 : Convert Energy Forms
Alexis has to identify an invention in her home that converts one energy form into another. She has selected the lightbulb. The energy input into a light bulb is electrical. What type of energy is output from a lightbulb?
Light and motion
Sound and light
Heat and light
Heat and motion
Heat and light
A lightbulb outputs heat and light after it has transformed the electrical energy it receives from the outlet or socket. Bulbs are one example of a household object that converts energy forms. An oven converts electrical energy into heat energy, a toaster concerts electrical into heat energy, and an alarm clock has an output of light and sound energy that is converted from electrical energy.
Example Question #231 : 4th Grade Science
Allison has to design a device that converts energy between two different forms. She decides she wants to convert electrical energy into motion and sound. Which invention should she model her design after?
A radio
The motor
A dog
An alarm clock
The motor
The motor is an excellent invention for Allison to use as a model for her device. The engine is used to power machinery, vehicles, and even toys. The motor converts electrical energy into sound and motion, so the object it is powering can move. Allison can design an engine that uses alternative fuel, that produces more power, or motorized something no one has ever added the ability to.
Example Question #232 : 4th Grade Science
What is energy?
Move from one place to another
Having the potential to develop into something great in the future
A measure of the amount of matter inside an object
A measure of the capability to produce change
A measure of the capability to produce change
Energy is the ability to do work or the ability to move an object. Energy cannot be made or destroyed; it can only be changed into different forms. Energy can be classified in two ways. First is potential energy, which is the amount of energy something has stored inside it. Next is kinetic energy. Kinetic energy is the energy of an object in motion. Anything that is moving has kinetic energy.
Example Question #2 : Convert Energy Forms
Mike designed a new firework for the holiday display. He spent weeks coming up with the perfect design to convert chemical energy into three forms of energy. Which three types of energy does a firework emit?
Light, chemical, and sound
Sound, light, and mechanical
Heat, light, and sound
Electric, sound, and heat
Heat, light, and sound
Fireworks emit three types of energy. The first is sound energy, which is caused by the chemical explosion and can be heard as a loud boom. The fireworks are ignited by lighting the central fuse that burns when the fireworks rise into the sky. Burning these different materials produces light. The colors seen in the show are determined by the amount of energy in heating different chemicals and fuel. The explosion also produces heat or thermal energy.
Example Question #1 : Convert Energy Forms
Raena designed a new device that can convert energy forms. Her design can take electrical energy and turn it into thermal or heat energy. Which answer choice(s) are an example of this conversion?
A water source in the park "runs" water.
A gas oven bakes a pizza for dinner.
A space heater heats a room in your home.
A phone records a voicemail message.
A space heater heats a room in your home.
Thermal energy is transferred to other objects causing them to heat up. A space heater is plugged into the wall, so it uses electrical power and converts it into heat energy to warm the room. The other response options have nothing to do with thermal energy and heating something.