Font size
WorksheetsUnit 3 Test Review
Total questions: 15
Worksheet time: 9mins
Why is it easier to see a white object than a black object in a dark room?
white reflects light and black refracts it
white reflects light and black absorbs it
white refracts light and black reflects it
white refracts light and black absorbs it
Why should you always test several objects during an experiment or investigation?
To make the experiment more interesting
For extra practice
To be sure the results are reliable
To see which is your favorite
If you use a prism to refract the colors of the rainbow, how do you actually collect this data?
observing
researching
interviewing
measuring
Which of the following is the 1st safety precaution you should use when building a circuit?
clean all your wires
use a new battery
use rubber gloves
read all the directions
Which of the following would be the best at preventing an echo?
marble
carpet
glass
wood
When you plug a lamp into the wall, electrical energy gets (a) into light and thermal energy.
When light is refracted through a prism, what can you see?
A flower
Black light
Nothing
A rainbow
Which object works best when reflecting light?
A smooth pond
A piece of wood
A piece of carpet
A black rock
A battery by itself is stored chemical energy. Once you put a battery in a device and use it, what kind of energy is it providing for the device?
Mechanical
Electrical
Thermal
Sound
I've said that light and heat energy usually go together...HOWEVER, in many cases one occurs before the other. For example, when you turn on a light bulb, which happens first?
The light is on
The bulb gets hot
Which is the best example of mechanical energy?
A battery
A fire buring
Jumping rope
A radio playing music
When light is bending what is happening?
(a)
When light bounces off an object, what is happening?
(a)
When a harp string is plucked, it makes sound by causing...
rays
electricity
vibrations
pulses
What happens when you open a switch in a circuit?
The circuit will explode
Electricity jumps through that switch
All electricity flows through that path
No electricity flows through that path
