Energy and Light Quiz

A robot walks across the floor. The robot’s speed increases. What is true about the robot’s energy?

• Its energy has decreased.

• Its energy has increased.

• Its energy is being created.

• Its energy is being destroyed.

A person sees the Moon in the night sky and creates a model using a drawing of the Moon. The Moon does not give off light. What can the person add to the model to explain why the Moon is visible in the night sky?

• add a person’s eyes producing light at night

• add a person’s eyes reflecting light from nearby

• add the Moon reflecting light from the Sun

• add the Sun shining light into the person’s eyes

A student uses books and a wooden ruler to make a ramp. Ball A rolls down from the top of the ramp and hits Ball B, which is sitting at the end of the ramp. The collision causes Ball B to move. The same activity is repeated with Ball A moving at different speeds. The distance that Ball B moves each time is recorded in the table. The answer to which question will be a very short distance?

• How far will Ball B move if Ball A rolls down the ramp with a speed slower than in Trial 1?

• How far will Ball B move if Ball A has more energy than in Trial 1, but less energy than in Trial 2?

• How far will Ball B move if Ball A rolls down the ramp with a speed faster than in Trial 3?

• How far will Ball B move if Ball A has less energy than Trial 3, but more energy than in Trial 2?

The diagram shows a candle with a flame and a teacher holding a metal rod with the ends labeled, A and B. After a few minutes, the teacher can feel the rod becoming warm at end B. Which statement is being investigated by this activity?

• Heat is everywhere.

• Heat is created by metal objects.

• Heat can move from the air to an object.

• Heat can move from a hot object to a cold object.

For this item, drag the answers into the appropriate boxes. Three different guitar strings are attached at each end to wood blocks. A student plucks each guitar string and watches the waves that each string forms. Place the guitar strings in order from shortest to longest wavelength.

A teacher places one lamp in front of gray paper and labels it 1. Then the teacher places a different lamp in front of a mirror and labels it 2. The teacher turns off the classroom lights and tells the students to look at the lamps and materials. Which table explains what will most likely be visible to the students?

• 1. gray paper: yes, yes 2. mirror: yes, yes

• 1. gray paper: no, no 2. mirror: no, no

• 1. gray paper: yes, no 2. mirror: no, yes

• 1. gray paper: no, yes 2. mirror: yes, yes

Four students are instructed to make a circuit that will cause a light bulb to glow when a switch is turned on for $8.00 or less. Which combination of materials is within the price limit, and what type of energy transfer causes the light bulb to glow?

A person makes a model of a carousel. A motor connected with wires and a 6-volt battery turns the carousel. Volts measure the amount of energy in a battery. When the battery is connected, energy goes to the motor, and the carousel starts spinning. It spins 5 times every minute. The person changes one material of the model at a time and writes down the results in a table. Which correctly describes a carousel design that will cause the spinning speed to be greater than 5 turns per minute?

• Decrease the carousel’s energy by using a larger carousel and a 1-volt battery.

• Decrease the carousel’s energy by using a smaller carousel and a 12-volt battery.

• Increase the carousel’s energy by using a larger carousel and a 1-volt battery.

• Increase the carousel’s energy by using a smaller carousel and a 12-volt battery.

A teacher plans to push a bowling ball so that it rolls across the floor and hits an empty cardboard box. Before the push, students write what they think will happen, and why. Which student ideas will most likely happen?

• 1 and 2

• 1 and 4

• 2 and 3

• 4 and 5

After the storm, when the electricity is back on, the friends are able to exchange text messages again using their cell phones. What happens to the pattern of 1s and 0s in the text message when a cell phone receives the radio wave from the tower?

• The message is changed back into letters.

• The message is changed into sound waves.

• The message is changed into dashes and dots.

• The message is changed into a new digital signal.

Tags

CCSS.RI.3.7

CCSS.RI.4.7

CCSS.RL.3.7

CCSS.RL.4.7

CCSS.RL.5.7