Grade 6 science worksheets - Free Printable

I can see this is a worksheet about "Energy and Energy Transfer" with multiple choice questions. Let me work through each question carefully.

Question 1: "__________ refers to the number of vibrations or waves going through in a given time."
- This is asking for the definition of frequency. Frequency measures how many wave cycles occur per unit of time (usually per second).
- Answer: frequency

Question 2: "Light and sound energy are carried along in __________."
- Both light and sound travel as waves. Light travels as electromagnetic waves, and sound travels as mechanical waves through a medium.
- Answer: waves

Question 3: "Identify the type of wave below that has particles vibrating at right angles to the wave's direction of travel."
- When particles vibrate perpendicular (at right angles) to the direction of wave travel, this describes a transverse wave.
- In longitudinal waves, particles vibrate parallel to the direction of travel.
- Answer: transverse wave

Question 4: "A wave in which particles move back and forth in the same direction as the wave travels is called __________."
- This describes a longitudinal wave where particle motion is parallel to wave direction.
- Answer: longitudinal wave

Question 5: "How does wave energy cross the Earth?"
- Wave energy can travel through different media depending on the type of wave. Sound needs a medium (solid, liquid, or gas), while light can travel through vacuum. The most comprehensive answer would be through all types of matter.
- Looking at typical options: by conduction, by radiation, through solids/liquids/gases
- For wave energy specifically traveling across Earth: it travels through solids, liquids, and gases (or similar phrasing about matter/media)

Let me reconsider - common answers might be:
- Through matter/materials
- By vibration
- Through a medium

The most likely answer based on standard curriculum: through matter or through a medium

Question 6: "The highest point of a mechanical wave is also called the __________."
- The highest point of a wave is called the crest.
- Answer: crest

Question 7: "The lowest point of a mechanical wave is also called the __________."
- The lowest point of a wave is called the trough.
- Answer: trough

Question 8: "The __________ is the distance between any two identical parts of a longitudinal wave."
- This is asking about wavelength - the distance between corresponding points on consecutive waves (like crest to crest or compression to compression).
- Answer: wavelength

Question 9: "The __________ is the distance between any two identical parts of a longitudinal wave."
- This appears to be the same as Question 8. It's asking for wavelength again.
- Answer: wavelength

Wait, let me re-read. One says "longitudinal wave" and one might say something else. Looking more carefully at the pattern, both Q8 and Q9 seem identical. They're both asking for wavelength.

Actually, checking the text more carefully - they both say "longitudinal wave" so they appear to be duplicate questions, both asking for wavelength.

Question 10: "What cannot carry waves?"
- Waves need a medium to travel through (except electromagnetic waves like light).
- A vacuum cannot carry mechanical waves (like sound).
- Common answer choices might include: solid, liquid, gas, vacuum
- Answer: vacuum (for mechanical waves)

Or if the options are different types of matter, the answer might be something that doesn't exist as a medium. But typically the answer is vacuum since mechanical waves cannot travel through empty space.

Final Answer:
1. frequency
2. waves
3. transverse wave
4. longitudinal wave
5. through matter (or through a medium)
6. crest
7. trough
8. wavelength
9. wavelength
10. vacuum