Effects of Light on Motor Movement

Lisa Martin demonstrates an experiment to investigate direct and indirect light using a solar cell connected to a motor. The setup involves connecting wires to the motor and solar cell, then observing how the motor's speed changes when the solar cell is aimed directly at the sun versus indirectly. The experiment is conducted outdoors, highlighting the effect of light intensity on energy transfer.

What is the main focus of the experiment conducted by Lisa Martin?

• To determine the color of sunlight

• To calculate the speed of light

• To investigate the effects of direct and indirect light

• To measure the temperature of the sun

What equipment is used to measure the energy from the sun in the experiment?

• A telescope and a camera

• A thermometer and a barometer

• A compass and a sundial

• A solar cell and a motor

At what time of day is the outdoor experiment conducted?

• Midnight

• Early morning

• Late afternoon

• Around noon

What happens to the motor when the solar cell is pointed directly at the sun?

• The motor spins slower

• The motor spins faster

• The motor stops completely

• The motor changes direction

How does the brightness of the environment affect the motor's movement?

• The motor only moves in complete darkness

• The motor moves faster in brighter conditions

• The motor moves slower in brighter conditions

• The motor is unaffected by brightness

What is the effect of pointing the solar cell away from the sun?

• The motor changes direction

• The motor stops completely

• The motor slows down

• The motor speeds up

What is the significance of using a black shirt in the experiment?

• To block the sunlight

• To reflect more sunlight

• To absorb more sunlight

• To measure temperature

What conclusion can be drawn from the experiment regarding light direction?

• Light direction has no effect on energy

• Direct light provides more energy than indirect light

• Indirect light provides more energy than direct light

• Both direct and indirect light provide the same energy

What is the purpose of the flag on the motor?

• To measure wind speed

• To indicate the motor's movement

• To provide shade

• To reflect sunlight