Light & Sound
How does light travel?
In a straight line.
What type of heat transfer occurs when warm air rises and cooler air sinks?
Convection.
What force pulls objects toward the center of the Earth?
Gravity.
Which state of matter has a definite shape and volume?
Solid.
What process changes liquid water into water vapor?
Evaporation.
What happens to light when it passes through a transparent object like a window?
It continues in a straight line.
Which type of energy is stored in a battery?
Chemical energy.
What do we call the force that slows objects down when they rub against each other?
Friction.
True or False: Freezing water into ice is an example of a chemical change.
False.
What do we call the process of water vapor cooling to form clouds?
Condensation.
True or False: Sound can travel through solids, liquids, and gases.
True.
True or False: Energy can be transformed from one form to another but cannot be created or destroyed.
True.
True or False: Objects with more mass require less force to move the same distance as objects with less mass.
False.
What happens to the particles of a substance when it is heated?
They move faster and spread apart.
True or False: Precipitation can occur in the form of rain, snow, sleet, or hail.
True.
You see a rainbow after a rainstorm. What property of light causes this phenomenon?
Refraction.
A metal spoon in hot soup becomes hot. Which type of heat transfer is this?
Conduction.
A red toy car is pushed with a large force and a blue toy car is pushed with a small force. Which car will move faster?
The red toy car, it was pushed with the larger force.
You mix baking soda and vinegar, and bubbles form. Is this a physical or chemical change?
Chemical change.
The Sun heats a puddle of water, and the puddle disappears. Which part of the water cycle is this?
Evaporation.
When light hits a shiny, smooth surface, what happens?
It reflects.
A lamp is plugged into the wall. What energy transformation occurs when the lamp is turned on?
Electrical energy transforms into light and heat energy.
An object is at rest. What needs to happen for it to start moving?
A force must act on it.
Which physical property of matter describes how tightly packed particles are in a substance?
Density.
What is the main source of energy that powers the water cycle?
The Sun.