WorksheetsUnit 2 Science Review
Total questions: 25
Worksheet time: 17mins
Which of the following classroom activities could be completed using only MECHANICAL energy?
Playing a game on a laptop
Boiling water on a hot plate
Writing with a pencil
Using a microscope
A student is looking directly at a lit nightlight through two different cardboard tubes as shown. Through which tube, if any, will the light be seen and why?
The bent tube only because the light bounces off the side of the tube and travels through the tube to the student's eye
The straight tube only because the light travels in a straight line directly to the student's eye
Both tubes because light travels equally well along straight and curved paths
Neither tube because both tubes absorb all of the light
Observe the image above. After reflecting off of the mirror, which object will the light coming from the laser most likely strike next?
The marble
The apple
The rock
The laser
Myopia is a condition more commonly known as nearsightedness. People with myopia cannot see objects clearly unless they are very close to them. Objects in the distance will look blurry. Myopia can be managed with corrective lenses in the form of glasses or contact lenses. How do corrective lenses help people with myopia?
Corrective lenses reflect light to make it easier to see distant objects.
Corrective lenses absorb light to make it easier to see distant objects.
Corrective lenses block light to make it easier to see distant objects.
Corrective lenses refract light to make it easier to see distant objects.
A class observed that when white light passing through a prism at a certain angle, the light changes to a rainbow pattern as it exits the prism at a different angle. What claim best explains the behavior of the light passing through a prism?
The light reflected from the prism created a rainbow.
The light bounces off the prism in different colors.
Colored light enters the prism and changes to white light.
Light refracts as they pass through the glass prism.
A student opens a drawer and sees several items inside.
Which of the items will refract light?
Choose FOUR correct answers.
Musical instruments cause the air to vibrate, sending waves that are detected by our senses. The energy from these vibrations of air is an example of —
thermal energy
light energy
sound energy
mechanical energy
Students were asked to list observations of the uses of energy in the classroom. Which observations listed above involved the use of electrical energy?
1, 2, & 4
3, 4, & 6
1, 3, & 5
1, 4, & 6
Many commonly used items produce light energy when they operate. Some commonly used items would be useless without light energy. Which TWO items would not be able to perform their functions without light energy?
Oven
Microwave
Cellphone
Printer
TV
A student designed the circuit above. Which switches should the student close to produce sound energy only?
Switch 1 and 3
Switch 1, 2, and 3
Switch 1 and 4
Switch 2 and 3
Observe the diagram above. How many bulbs would turn on if a student closed switch C and switch D?
0
1
2
3
Observe the circuit above. Which procedure can a student use to turn on the green and red lights only?
The student cannot follow any procedure to turn on the green and red lights only.
The student can close switch A and switch C, but leave switch B open.
The student can close switch A and switch B, but leave switch C open.
The student can close switch B and switch C, but leave switch A open.
A student placed two batteries in a flashlight in the order shown below. The flashlight will not turn on. Based on the evidence observed above, what is the best explanation as to why the flashlight will NOT turn on?
The bulb is burned out.
The batteries are old.
The arrangement of the batteries does not allow a complete circuit.
The arrangement of the batteries allows for a complete circuit.
A student observes a hotplate on a table. The hotplate has an on / off switch and a dial to control the temperature. The hotplate is not in use now, but will be used in the science class investigation on electrical circuits. In order to use the hotplate during a science investigation, what must the student do to the hotplate to complete the circuit?
Plug the hotplate into the outlet
Turn the switch to the "on" position
Plug in the hotplate and place a beaker on the plate
Plug in the hotplate and turn the switch to the "on" position
When using a solar-powered calculator, what source of energy is being used to power the calculator?
Electrical energy
Light energy
Mechanical energy
Sound energy
Using water to turn the turbines in a hydroelectric power plant is an example of using which form of energy to produce electricity?
Light
Mechanical
Thermal
Electrical
A student created a circuit using a battery, two switches, and 5 LED light bulbs.
Electrical energy will be transformed into light energy when switch number two is closed.
Select the TWO correct lights that will light up when switch two is closed.
A student built a circuit that included a battery, wires, 4 switches, 2 bulbs, a motor, and a buzzer.
Select which TWO switches must be closed for the energy of the circuit to be transformed to create mechanical energy and sound energy.
A clear, glass beaker is filled half-full of water. A plastic spoon is placed in the beaker, and one end rests against the top edge of the beaker. When viewed from the side, the bottom of the spoon does not line up with the top of the spoon. What causes this to happen?
Light rays bend the plastic spoon.
Light rays are reflected by the water.
Light rays are refracted in the water.
Light rays are absorbed by the plastic spoon.
What object can be used at Position X for the buzzer to sound when Switch K is closed?
A power source
Another bulb
An insulated wire
Another switch
What happens to light passing through a hand lens that makes the image of the penny appear larger? The light is-
The arrows in the diagram represent light rays.
Which of the following is shown by the diagram?
Light is being absorbed.
Light is being refracted through a convex lens.
Light is being reflected through a concave lens.
Light is reflecting off a mirror.
Mechanical energy is the energy of (a)
Examples of objects that use different types of energy to perform their functions are shown. Which examples use mechanical energy to perform their functions?
Examples 1, 2, and 4
Examples 1, 3, and 4
Examples 1 and 2 only
Examples 3 and 4 only
Lenses, like camera lenses or microscopes...
reflect light
refract light
absorb light
