Benchmark1 - 2024

During a school science fair, Liam demonstrates how a giant bell works. Which of the following represents the transfer of energy for the bell?

• Mechanical energy to Electrical energy

• Light energy to Sound energy

• Sound energy to Mechanical energy

• Mechanical energy to Sound energy

What form of energy does Layla use to power a fan in the classroom?

• light

• thermal

• electrical

• sound

During a science experiment, Adrienne notices that a popsicle stick appears to be larger at the bottom of a glass filled with water than at the top. What is the reason behind this observation?

• Light is reflected

• Light is refracted

• Light is bounced off

• The pencil broke

A cup of orange juice is added to a glass of water. What physical properties change after the orange juice is added?

• Taste only

• Color and taste

• Mass only

• Nothing changes

When Ryan uses his telescope to gaze at the stars, the light from those distant stars is bent or -

• reflected

• bounced off

• curved

• refracted

We used 4 beakers in class and in each beaker we mixed sugar and water, sand and water, salt and water, and pepper and water. We noticed that the sugar and salt both dissolved in water. The sand and water plus the pepper and water -

• retained their physical properties.

• also dissolved when mixed in water.

• disappeared when mixed in water.

• had less density than water.

Which teacher correctly records what happens to light when going through a clear glass of water?

• Teacher 1 - Light bends and curves when it hits a shiny surface.

• Teacher 2 - Light refracts or bends when it hits a mirror.

• Teacher 3 - Light reflects and curves when it hits a clear glass of water.

• Teacher 4 - Light refracts and continues to travel in a straight line when it goes through a lens or clear glass of water.

True or False? A closed circuit means the electrical path is complete and current can flow.

• True - a closed circuit allows current to flow, completing the electrical path.

• False - a closed circuit prevents current from flowing by breaking the electrical path.

Kamila stirred some powdered lemonade inside a pitcher of water. What happened to this mixture, after she was done stirring?

• The powdered lemonade dissolved in the water and became one.

• The water evaporated into the air quickly.

• The powdered lemonade evaporated into the air.

• The powdered lemonade stayed floating on top of the water.

Every morning, Lyla uses her hands to open her car's door to get in. What type of energy is Lyla displaying?

• Mechanical energy

• Light energy

• Electrical energy

• Thermal energy