Across
- 6. During this phase of the moon, it appears to be growing larger in the sky, moving from a crescent to a full moon.)
- 7. Cutting paper into smaller pieces or melting ice cream are examples of changes like this.)
- 9. When you rub your hands together, you feel warmth due to this force resisting the motion between your skin.)
- 11. When you press the gas pedal in a car, you're causing this, whether it's speeding up, slowing down, or changing direction.)
- 12. Think of this as the "currency" of the universe, allowing things to happen and change.)
- 14. When the tide is at its lowest, the water level is at this point.)
- 15. Water, salt, and sugar are all examples of substances made up of two or more different elements chemically bonded together.)
- 16. It's the invisible force that keeps us anchored to the Earth and governs the motion of planets and stars.)
- 19. Imagine trying to start a heavy car from rest; this property of matter is why it's hard to get it moving.)
- 20. When you throw a ball, its movement through the air is powered by this type of energy.)
- 22. It's what causes the change of seasons as the Earth orbits around the sun.)
- 25. It's the force responsible for creating tides, pulling water towards the moon and the sun.)
- 27. It's what causes day and night as the Earth spins on its axis.)
- 28. It's what powers your lights, appliances, and devices, flowing through wires and circuits.)
- 29. Burning wood to produce ash and smoke is an example of this kind of change.)
- 32. The energy stored in the bonds between atoms within molecules, released during reactions like burning wood or digesting food.)
- 33. When more than half but not all of the moon is illuminated, it's in this phase.)
- 34. The type of tide with the least difference between high and low water levels, occurring during quarter moons.)
- 36. These tides are influenced by the gravitational pull of the sun.)
- 38. If you're standing at the top of a slide, you have this type of energy waiting to be released.)
Down
- 1. From summer's heat to winter's chill, this is what brings changes to the weather and environment throughout the year.)
- 2. These tides are primarily caused by the gravitational pull of the moon.)
- 3. The type of tide with the greatest difference between high and low water levels, occurring during full and new moons.)
- 4. It's not just how fast something is moving, but also the direction it's moving in.)
- 5. Opposite of waxing, during this phase, the moon appears to be shrinking, moving from a full moon to a crescent.)
- 8. It's the measure of the gravitational force acting on an object's mass.)
- 10. This is what happens when water vapor in the air cools down and turns back into liquid droplets, forming clouds.)
- 13. Gold, oxygen, and iron are all examples of substances made up of only one type of this.)
- 14. During this type of eclipse, the Earth passes between the sun and the moon, casting a shadow on the moon.)
- 17. It's the rise and fall of sea levels caused by the gravitational pull of the moon and the sun.)
- 18. On the longest and shortest days of the year, known as these, the sun reaches its highest and lowest points in the sky.)
- 21. When a puddle disappears on a hot day, it's because the water is undergoing this process, turning into water vapor.)
- 23. It's the amount of matter in an object, determining how much inertia it has.)
- 24. This is what you exert when you push a door open or pull a wagon uphill.)
- 26. Trail mix and salad are both examples of this, where different substances are physically combined but not chemically bonded.)
- 29. When only a small sliver of the moon is visible, it's said to be in this phase.)
- 30. It's what happens when one celestial body moves into the shadow of another, like the moon blocking the sun.)
- 31. When the tide is at its peak, the water level is at this point.)
- 35. It's the time of year when day and night are approximately equal in length, occurring twice annually.)
- 37. During this type of eclipse, the moon passes between the Earth and the sun, casting a shadow on the Earth.)
- 39. It's the smallest unit of matter, consisting of a nucleus surrounded by a cloud of electrons.)