Energy

Energy

1000

2. Fill in the blank in the sentence below. "The ______ energy of a substance is determined by how active its particles are." A. mechanical B. heat C. light D. electrical

B. heat

2000

When light strikes a translucent material, some of the light is allowed to pass through. The rest of the light is either scattered or absorbed. Translucent materials allow more light to pass through them than opaque objects, such as metal, but less light than transparent objects, such as water. A good example of a translucent material is _______. A. the air outside B. a sheet of waxed paper C. a pane of window glass D. a long wooden board

B. a sheet of waxed paper

3000

What property of light is shown when i turn on the flashlight? A. Light bends around objects as it travels. B. Light cannot travel through the air. C. Light always travels through solid objects. D. Light travels in a straight line.

D. Light travels in a straight line.

4000

Which of the following describes something that light cannot pass through? A. obtuse B. opaque C. translucent D. transparent

B. opaque

5000

1. What is the "bouncing off" of light energy called?

Reflection

Energy

1000

Which of the following describes something through which objects can be seen, but not clearly? A. transparent B. opaque C. translucent D. obtuse

C. translucent

2000

Juan puts a pencil into a glass of water. The pencil appears to bend at the point where it enters the water. Juan puts a pencil into a glass of water. The pencil appears to bend at the point where it enters the water. What causes the pencil to look bent? A. The light waves traveling through the glass are reflected by the pencil when it is underneath the water. B. The water in the glass absorbs incoming light waves so light cannot pass through the water. C. The water in the glass changes incoming light waves into a different form of energy. D. The light waves traveling through the glass are refracted as the waves pass from air to water.

D. The light waves traveling through the glass are refracted as the waves pass from air to water.

3000

Which of the following is a source of light energy? A. solar panels B. fire C. the Moon D. all of these

B. fire

4000

A car is driving in the middle of the night, and it is very dark. Light from the headlights of the car A. travels only to objects that are shiny. B. travels in a straight line. C. travels in a circle. D. travels in a curved line.

B. travels in a straight line.

5000

Batteries can be produced by placing strips of metal into certain liquid solutions and then connecting the pieces of metal with wire. What kind of energy is stored in the liquid solutions? A. light B. magnetic C. sound D. chemical

D. chemical

Energy

1000

Which of the following actions can produce heat energy? A. refrigerating leftover food B. placing a metal spoon next to a magnet C. rubbing your hands together D. putting a book on the top shelf of a bookcase

C. rubbing your hands together

2000

Which of the following correctly completes the statement? A candle gives off ___________. A. both heat and light B. neither heat nor light C. heat only D. light only

A. both heat and light

3000

Lily is reading in her room at night. Which of the following light sources is she most likely using to see the book? A. lightning B. a light bulb C. the Sun D. a distant star

B. a light bulb

4000

Which of the following is used to bend light at different degrees according to its wavelength, separating it into its different colors? A. air B. prism C. water D. mirror

B. prism

5000

Which of the following describes the bending of light due to a change in its speed? A. transmission B. absorption C. refraction D. reflection

C. refraction

Energy

1000

Think of scuba divers in the ocean. The water near the surface is A. darker in color than the water near the bottom. B. cooler than water near the bottom. C. more brightly lit than water near the bottom. D. creating its own light but the water near the bottom is not.

C. more brightly lit than water near the bottom.

2000

Light behaves differently when it strikes different kinds of materials. Some materials allow light to pass through them. Other materials absorb or reflect the light instead. Two kinds of materials are shown above. Water is a transparent material and is shown in image I. A metal can is an opaque object and is shown in image II. Which of the following correctly compares the way that light behaves when it strikes transparent or opaque materials? A. Opaque materials allow more light to pass through them than transparent objects do. B. Opaque materials do not absorb light, whereas transparent materials do absorb light. C. Opaque materials allow less light to pass through them than transparent objects do. D. Opaque materials allow the same amount of light to pass through them as transparent objects

C. Opaque materials allow less light to pass through them than transparent objects do.

3000

Which of the following types of energy do we get directly from the Sun? 1. Heat Energy 2. Electrical Energy 3. Light Energy A. 2 and 3 only B. 2 only C. 1 only D. 1 and 3 only

D. 1 and 3 only

4000

Select the surface that would most reflect the most light. A. construction paper B. flat aluminum foil C. firewood D. dark fabric

B. flat aluminum foil

5000

Mitchell goes to an outdoor baseball game during the day. _______ is most likely providing the light energy that allows Mitchell to see the game. A. The Sun B. A light bulb C. The flames of a fire D. The Moon

A. The Sun

Energy

1000

A light bulb is a source of _______. A. light energy B. no energy at all C. sunlight D. light but not energy

A. light energy

2000

A light bulb produces light. What else does it produce? A. gas B. movement C. air D. heat

D. heat

3000

If you shine a flashlight on a mirror, what will happen to most of the light? A. The mirror will refract it. B. The mirror will reflect it. C. The mirror will absorb it. D. The mirror will bend it.

B. The mirror will reflect it.

4000

What is the definition of energy?

Energy is the ability to do work, cause change, or cause movement.

5000

Which of the following describes something through which objects can be seen clearly? A. opaque B. transparent C. translucent D. obtuse

B. transparent