Check In: SOUND What makes a sound high or low? Overview In Sound, you will strike a series of chimes to learn about high and low sounds. Think About This Sounds are made when something vibrates. And every sound has a pitch. Some sounds have a high pitch. Some have a low pitch. Can you predict which objects will produce a sound with a high pitch? Record What You See Strike each chime with the mallet and watch what happens. Record the pitch of the chime on the pitch meter in the table. CHIME Length #1 #2 #3 #4 #5 15 cm 18 cm 21 cm 24 cm 27 cm Pitch Which chime makes the sound with the highest pitch? How long is it? Which chime makes the sound with the lowest pitch? How long is it? What is the pattern you find between the length of a chime and its pitch?
Check Out: SOUND Use your Check In sheet and what you remember from the activity to answer these questions. What makes a sound high or low? 1. To make a sound, a musical instrument makes something vibrate. For each instrument listed in the table below, what is the thing that vibrates? What action makes it vibrate? Use the choices listed below the table to fill in the table. Instrument Clarinet Bass drum Piano Guitar Cymbals What Thing Vibrates? What action makes it vibrate? Things that vibrate: Round plastic sheet stretched tight A metal disk A wooden reed Strings Actions that make them vibrate: Blowing air over it Hitting it Picking at it 2. For each pair of musical instruments, which instrument makes high-pitched sounds and which makes low-pitched sounds? (Circle your choice for each instrument.) Small pipes on an organ Large pipes on an organ Violin (small) Cello (large) Bass drum (large) Bongo drum (small)
Check In: HEAT How does heat pass through metal and wood? Overview In Heat, you will explore how things get hot by measuring the temperature of a pan cooking an egg. Think About This Some things get hot quickly. Others things do not. How quickly something gets hot depends on what it is made from. As you do the activity, think about the different materials to see if they heat up fast. Record What You See As you go through this activity, you will use the thermometer to measure the temperature in the pan on the stove. At the beginning (0 minutes), the stove is off. Measure the temperature of the pan and the temperature of the handle. Fill in the first row of the table below (0 minutes) with those temperatures. Next turn the stove on. For each step, measure the temperature in the pan and on the handle. Note how long the egg has been cooking. Use that information to complete the table. Time Temperature of pan Temperature of handle 0 minutes 1 minute 2 minutes 3 minutes
Check Out: HEAT Use your Check In sheet and what you remember from the activity to answer these questions. How does heat pass through metal and wood? 1. In the activity, which got hotter: the pan or the pan's handle? 2. Which was the better conductor of heat: the pan or the pan s handle? 3. For each object below, tell if the object is a conductor of heat or an insulator of heat. Then explain your answer. Object Conductor or Insulator? How do you know? Metal spoon Toothpick Aluminum can Wool sweater Foam coffee cup Coin
Check In: LIGHT What happens to light rays when they strike different objects? Overview In Light, you will shine a light on different objects to see what happens. Think About This Some things we can see through. Other things cast a shadow. Some things make a reflection. Think about what these things are made from. Are they clear? Are they shiny? Neither? As you do the activity, think about whether light behaves differently when it strikes different materials. Record What You See Draw a picture of the path that light takes when it strikes each object. Then describe that path in words. Object Draw Describe Mirror Window Book
Check Out: LIGHT Use your Check In sheet and what you remember from the activity to answer these questions. What happens to light rays when they strike different objects? 1. Describe what happens when light strikes each of the following objects: Object What happens to light striking this object? Basketball Paper for wrapping gifts Water in a wading pool The rearview mirror in a car Lens on a camera Mirror in a department store The shiny side of a CD