Challenge 6: Energy & Electricity

Campfires are sometimes used to cook food. Which type of energy from the campfire cooks the food?

• Light

• Sound

• Thermal

• Electrical

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

NGSS.MS-PS3-3

Batteries and food are both sources of energy. What kind of energy is stored in both of them?

• Chemical

• Sound

• Thermal

• Electrical

Electrical energy is transformed into many energy forms and is used to power most of the household appliances we use each day. Which appliance is a source of mechanical energy?

• Radio

• Stove

• Fridge

• Blender

Light energy travels in waves. Light travels in a straight line until it strikes an object or travels from one medium to another. As it travels from one medium to another it appears to bend. Which term is best used to describe the bending of light waves?

• Refraction

• Reflection

• Absorption

Tags

NGSS.MS-PS4-2

Solar power is a technology that relies on a renewable energy source. Solar power changes energy from the Sun into a form of energy that can be used to heat our homes and run household appliances. What form of energy must solar energy be changed into in order to run household appliances?

• chemical

• electrical

• light

• thermal

In many electrical factories, fossil fuels are burned to boil water and generate steam. This steam is then used to help generate electricity. What type of energy is given off by the fossil fuels and used to boil the water?

• chemical energy

• heat energy

• light energy

• sound energy

Miguel is rolling a ball down a hill. This is an example of which form of energy?

• chemical

• electrical

• mechanical

• thermal

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

Lathisha notices that when she rubs her hands together, they feel warm. Which of the following is the best explanation for why this happens?

• energy is reflected into her hands

• heat energy is produced by the friction

• light energy of the Sun heats her hands

• energy is absorbed from the air molecules by her hands

Tags

NGSS.MS-PS1-4

Heat from the Earth is used as affordable energy source to reduce the dependence on fossil fuels. Which energy source is most likely being described?

• hydroelectric

• geothermal

• wind

• solar

Tags

NGSS.MS-PS3-4

Which of the energy transformations best explains the conversions of solar panels?

• electrical to heat

• light to electrical

• wind to electrical

• electrical to hydroelectric