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WorksheetsDCA 2nd Six Weeks
Total questions: 21
Worksheet time: 43mins
An old fashion metal toy is shown above. When the candle is lit, the carousel of horses begins to turn. Which of these correctly describes the energy that makes the carousel turn?
Heat from the candle produces currents of warm air.
Heat from the candle produces electrical energy
Light from the candle produces mechanical energy
Light from the candle produces wind currents
The toy oven shown uses a light bulb to bake small cakes. What type of energy does the toy oven use to bake cakes?
Electrical and thermal
Mechanical and electrical
Thermal and mechanical
Light and sound
Which object requires only mechanical energy to perform its main function?
hammer
Fan
pin
iron
The diagram above shows a lamp system.
Which type of energy will a person first use to make the lamp work?
Electrical Energy
Light Energy
Mechanical Energy
Sound Energy
A string of lights with small bulbs is shown below. The bulbs are connected by wire that is covered in an insulator. When the lights are on, electricity travels in....
a complete circuit
a sound wave
a light ray
an incomplete path
The diagram shows the metal posts that are usually found on a battery. The battery can be connected to a bell and a switch to produce sound. Which statement best explains why there are two metal posts on the battery?
The battery needs only one metal post to connect to the bell, but the other post is present in case the first post fails to post.
The battery needs to form a complete circuit that starts with one metal post and ends with the other metal post.
One metal post makes a complete circuit with the switch, and the other metal post makes a complete circuit with the bell.
One metal post makes the bell start to ring, and the other metal post makes the bell ring louder
Light hitting a mirror and bouncing off is an example of _____________________.
reflection
refraction
transmission
absorption
How does the light behave differently when it enters the prism?
The ray of light becomes shorter when it strikes the glass.
The ray of light straightens as it strikes the glass.
The ray of light bends as it strikes the glass.
The ray of light transforms to heat when it strikes the glass.
If you put a pencil in a glass of water it appears bent. This is an example of _____________
Reflection
Opaque
Refraction
Transparency
Light hitting a mirror and bouncing off is an example of _____________________.
reflection
refraction
transmission
absorption
Light passing through a lens and bending is an example of ______________________________.
reflection
refraction
transmission
absorption
When light travels through air into a prism, it bends and separates into many colors. In which other situation does light bend? (5.6C)
When light moves through air into water
When light hits a wall
When light passes through outer space
When light hits a mirror
Scientists use telescopes to make distant objects appear closer. Some parts of a telescope are shown here. Which of the following best describes how the objective lens of this telescope helps a scientist observe the moon? (5.6C)
The objective lens produces light.
The objective lens blocks light.
The objective lens reflects light.
The objective lens refracts light.
A student conducts an investigation by shining a flashlight toward a flat mirror. The student changes the angle of the mirror and observes the path of the reflected light. As the mirror changes direction, the light reaching the mirror can reach the ceiling because the light---(5.6C)
travels in straight lines and reflects from the surface of the mirror
refracts in the glass of the mirror and is spread out all over the room
enters the mirror and changes direction when it is refracted by the back of the mirror
travels through air and does not change its direction in air
Light tends to ______________________, or go through transparent (clear) objects.
reflect
refract
transmit
absorb
