Matter and Energy Unit - 5th grade
Which best describes a material that could be used as a pan for baking cakes. Good conductor of cold Poor conductor of cold Good conductor of heat Poor conductor of heat.
.Good conductor of heat
An ice cube is placed in a glass of water. The total weight of the ice cube and water is 0.5 pounds. After the ice melts, what will be the most likely weigh of the water? 0.4 pounds 0.5 pounds 0.6 pounds 1.0 pounds
0.5 pounds. It doesn't gain or lose any weight when it changes state. It's got the exact same amount of stuff (matter).
In which season will transpiration occur at the slowest rate Fall Winter Spring Summer
Winter. Transpiration is evaporation from leaves of plants. Evaporation depends on heat.
Sarah is stirring her hot chocolate with a metal spoon and she notices that the spoon is getting hot. This is most likely caused by which type of heat transfer? conduction convection radiation transpiration
conduction
Mike is racing his electric toy truck. The truck hits a brick wall and the front of the truck gets crushed. The truck originally had a mass of 2.0 kg. How much mass does the truck not most likely have? 1.5 kg 1.9 kg 2.0 kg 2.2 kg
2.0 kg
Which is the best example of convection? A camp fire A light bulb A hot air balloon A microwave oven
A hot air balloon (the hot air rises and pulls up the balloon)
Which experiment would most resemble the complete water cycle? Watering plants Burning wet wood Water flowing from a faucet Boiling a pot of water with a lid on it.
Boiling a pot of water with a lid on it. Evaporation from the water. It condenses onto the inside of the lid and precipitates back into the pot.
Which best describes the process of convection Convection is the primary way heat travels through waves Convection is the primary way heat travels through metals Convection is the primary way heat travels through a toaster Convection is the primary way heat travels through liquids and gases.
Convection is the primary way heat travels through liquids and gases.
Heat from the Sun's energy most directly affects which part of the water cycle? Evaporation Precipitation Condensation Runoff
Evaporation
In the water cycle, which must happen before condensation? Runoff Evaporation Precipitation Transpiration
Evaporation
On a hot day in the sun, why does Robert use a foam can holder to keep his drink cool? Foam reflects cold air from the can Foam insulates the cold drink Foam reflects heat from the sun off the can Foam conducts heat between the can and the air.
Foam insulates the cold drink
In art class, the students watch a video about creating glass art. Which statement best describes how glass is shaped into a vase. Glass is frozen and is more flexible to shape Glass is melted and is less flexible to shape Glass is melted and is more flexible to shape Glass is frozen and is less flexible to shape.
Glass is melted and is more flexible to shape
An unlit candle was laid on a table directly in front of a hot fireplace. Which most likely explains why the candle melted? Heat energy from the fire was radiated through the air to the candle Heat energy from the fire was conducted through the table to the candle Heat energy from the fire reached the candle by convection Heat energy from the fire was conducted through the air into the candle.
Heat energy from the fire was radiated through the air to the candle. The fire does transfer heat by convection, but only upwards!
In order for clouds to form, what must happen first? Heat energy from the sun changes water in clouds from a gas to a liquid. Light energy from the sun changes water on earth from a gas to a liquid Light energy from the sun changes water in clouds from a liquid into a gas Heat energy from the sun changes water on earth from a liquid into a gas.
Heat energy from the sun changes water on earth from a liquid into a gas. (Evaporation)
Why does an ice cube melt when dropped into hot liquid? The liquid absorbs heat from the ice Heat from the liquid transfers to the ice Heat from the ice transfers to the liquid Cold from the ice transfers to the liquid
Heat from the liquid transfers to the ice. Remember than only heat can move. There is no such thing as cold moving.
Which best explains why a blacksmith must heat iron before shaping it? Heating iron makes it harder Heating iron makes it softer Heating iron changes its color Heating iron changes its texture
Heating iron makes it softer (and more malleable)
Which is an example of heat transfer by convection? A glowing light bulb Cooking with a microwave oven Heating a piece of metal in a flame Heating the atmosphere
Heating the atmosphere. The atmosphere isn't heated by the Sun directly. The Sun's radiation heats the Earth, and the air is heated by the Earth by convection.
Which material is most likely to expand when exposed to freezing temperatures? Iron Wood Water Plastic
Water. This is a tricky one. Most materials contract when they get cold. However, when water freezes, it gets BIGGER. Try it at home if you haven't already.
Billy's mom is having a hard time opening a jar of jelly. Billy tells his mom to hold the jar lid under water for a short period of time Which best explains the water temperature Billy's mo should use and why this would help. Hot water warms the lid and causes it to contract, making it easier to open. Hot water warms the lid and causes it to expand, making it easier to open. Cool water warms the lid and causes it to contract, making it easier to open. Cool water warms the lid and causes it to expand, making it easier to open.
Hot water warms the lid and causes it to expand, making it easier to open. Good tip to remember You'll use this trick a lot in your life.
What happens to water vapor when heat energy is taken away from it? It turns into a liquid It turns into a gas It turns into a solid It turns into transpiration
It turns into a liquid
Which of the materials would be the best conductor of heat? Plastic Metal Stone Wood
Metal (stone is second best, then plastic and then wood)
Why is it better to have a cooking pot with a plastic handle instead of a metal handle? Plastic looks better than metal Plastic washes easier that metal Plastic is less expensive that metal Plastic is not a good conductor of heat.
Plastic is not a good conductor of heat. The best handles are wood, but they also are more expensive to make.
Joe wants to play on a slide one sunny day but the slide is too hot. Which is most likely reason for the slide being hot? Radiation from the Sun Convection from the Sun Conduction from the sun Transpiration from the sun
Radiation from the Sun.
Which best describes heat transfer by radiation? A slice of bacon frying in a pan A pot of boiling water on a stove A camp fire warming hands A hot air balloon rising.
The camp fire
Which best explains why hot air rises above a dark parking lot? The dark parking lot heats up the air, the air rises by conduction. The dark parking lot heats up the air. The hot air rises by convection The dark parking lot heats up the air. The hot air rises by insulation. The dark parking lot heats up the air. The hot air rises by radiation.
The dark parking lot heats up the air. The hot air rises by convection
Jake is wearing gloves while he takes a hot pan out of the oven. Which best explains why Jake needs to wear the gloves while he carries the hot pan. The gloves protect his hands from convection heat in the pan The gloves protect his hands from heat that is radiated through the hot pan The gloves protect his hands from heat that is conducted through the hot pan The gloves protect his hands from heat that enters the pan from the surrounding air.
The gloves protect him from heat that is conducted from the pan.
Which best explains why a hot air balloon floats. The heated air expands to fill the balloon. The air in the balloon is now lighter than the surrounding air, causing the balloon to rise. The heated air expands to fill the balloon. The air in the balloon is now heavier than the surrounding air, causing the balloon to rise. The heated air contracts to fill the balloon. The air in the balloon is now denser than the surrounding air, causing the balloon to rise. The heated air contracts to fill the balloon. The air in the balloon is now lighter than the surrounding air, causing the balloon to rise.
The heated air expands to fill the balloon. The air in the balloon is now lighter than the surrounding air, causing the balloon to rise.
Which best explains why the sun is needed in order to produce rain The sun cools the clouds, which causes them to hold less rain The sun cools ocean water which causes more clouds to form The sun heats the clouds which causes them to hold more rain The sun warms the ocean which causes more clouds to form.
The sun warms the ocean which causes more clouds to form. Most evaporation on earth is from the oceans.
A fresh apple is placed in a tightly sealed glass jar. The total mass of the jar and the apple is measured. After a week, the apple begins to rot. The total mass is measured again. What can be accurately predicted? The total mass will increase because the rotting apple will produce gases. The total mass will decrease because the rotting apple will release heat. The total mass will not change because the amount of matter in the apple and the jar will not change. The mass of the jar will be the total mass because no matter will be left in the jar after the apple rots.
The total mass will not change because the amount of matter in the apple and the jar will not change. As long as the jar is sealed tightly, nothing will get out, so all the original stuff will still be there, even if it has undergone a chemical change.
Ceramic materials do not melt easily. Which best describes a practical use for ceramics that takes advantage of this characteristic. An ice cube tray A statue in a garden Pottery in a museum Tiles on the outside of the space shuttle.
Tiles on the outside of the space shuttle. It gets REALLY hot when the space shuttle re-enters the atmosphere. The tiles on the outside act as an insulator. Tile isn't the best insulator, but the others, like plastic and wood will melt or burn pretty quickly.