Why would the student shake the salad dressing well before using it? Select TWO correct answers.

A hand lens refracts light. When light rays shine on the lens, most of the light rays —

A student drew this model to show what happens when sugar dissolves in water. Black circles represent particles of sugar. White circles represent particles of water. What change would make the model more accurate?

For a science experiment, a class used a penny, vinegar, and water. They made and recorded several observations. If the students made a second round of observations on Day 2, which one would least likely change from Day 1?

Look at the picture. A student sets up an investigation to see how the number of books affects how far the car rolls after going down the ramp. When the toy car is released, it rolls down the ramp. Which force is responsible for causing the car to roll down the ramp?

Students test the effects of forces that act from a distance, causing objects to move. They discover that two forces have this effect on objects. These forces are –

This student has built a periscope using a tube and two mirrors. This periscope works because of —

A lab investigation called for the following items to be mixed together. Which ingredients in the image will dissolve in water? Select TWO correct answers.

Eric stirs two tablespoons of sugar with one cup of warm water in a glass until the sugar is no longer visible. He calls the resulting liquid Substance J. Next, he stirs together two tablespoons of sugar with two tablespoons of cinnamon until thoroughly mixed. He calls this substance, Substance K. Which describes how Substance J differs from Substance K?

Burning a candle creates —

Gabriella is using a thermometer to collect information about temperatures at different times of the day. She made and recorded several observations. The chart below shows some of the observations.

Which of the following objects is the best conductor of electrical energy?

Which of the substances shown in the chart could be sugar?

Look at the picture. A force is acting on the car that makes it move to the right. Which arrow shows the direction for the force of friction?

Part A: Which circuit will function correctly?

Part B: Which statement best explains the answer to Part A?

Mrs. Eaton poured water in a cooking pot and heated it. Mrs. Eaton asked her students to draw a picture to show the water molecules before and after they were heated. Which of the following drawings would be correct?

A student wants to investigate how forces can cause motion. A toy car is placed on a table. Which action explains what would make the toy car move forward?

Look at the picture. Chen built this circuit, but the LED bulb does not light up. Chen’s circuit is not working. Look back at his circuit. Between which two points on the circuit should Chen place a wire in order to make the LED bulb light up?

A student was learning about electromagnets. He decided to run an experiment and coiled wire around a nail. As he completed the experiment, he created the data table shown below.

Which substances, when mixed together, maintain their original physical properties?

Which describes what happens to light when it enters and exits a prism?

The flow chart describes a change in energy of a stove. Move ONE correct answer to each box to complete the flow of energy.

After an investigation demonstrating that a circuit requires a complete path so a current can pass, four students were asked to draw a diagram representing the experiment. Which student designed an accurate diagram of a closed circuit?

A student investigates how potential and kinetic energy can change in an object. The student holds a rock and then releases it. At which point is the potential energy in the rock the greatest?

Oil is less dense than water. A cork is less dense than oil. Which illustration below is correct if oil, water, and a cork are mixed together?

Which of the following is an example of refraction?

Which of these objects can convert electrical energy to mechanical energy? Select TWO correct answers.

Look at the object below. Why is it called transparent tape?

Which of these tools is used primarily for safety?

A student and his younger brother observed the straw and glass. The younger brother asked why the straw looks bent. What causes the straw to appear bent?