Picking up a heavy box is much more difficult than putting it down. What is a likely explanation for this?
A student wants to experiment to determine how the height of a ball dropped in a box of sand will affect the crater size it will make in the sand.
What other piece of equipment will be most useful in conducting this experiment?
Students are performing the investigation shown below.
What are they most likely testing?
Asad wants to know the maximum distance a toy car will travel when he gives it a strong push. Which experiment below best allows Asad to determine this?
Jason blows up a balloon, and holds the opening of the balloon closed with his fingers. He then lets his fingers slip, and the balloon flies away. Which experiment measures what happens to the balloon due to the air escaping from its opening?
A teacher did a demonstration for her class. She found the mass of a baseball and a crumpled piece of paper. She then held both at a height of 1 meter above the table top. She dropped both at the same time. The students wrote about the demonstration, shown on the journal pages in the illustration below.
According to the above information, which student has written a testable hypothesis?
A trebuchet can launch an object a very far distance. When the rope is cut, the counter weight will be pulled towards the ground, causing the object on the other end of the trebuchet to launch.
A student designed an experiment to determine which type of ball would go the farthest using the trebuchet. The student used 3 types of balls and 3 counter weights, each with a different mass.
What should the student do to improve the experiment?
A student wanted to test the effect of friction on a toy car rolling down a ramp. She has constructed the ramp with five lanes, each covered with a textured material.
She rolled a toy cart down each lane and used a timing device to measure the length of time it took the cart to reach the end of the ramp. Her results are shown in the chart below.
Refer to the information above. What conclusion could the student make based on this experiment?
Eddie and Connie used two textbooks and a board to make a ramp. They rolled two different balls down the ramp and measured how far the ball traveled after 10 seconds. This was repeated for five trials and the results are in the table below. What parts of the experiment were kept constant?
Choose TWO correct answers.
Some students were investigating which surfaces would allow a ball to roll the farthest. Which of the following would be essential in their investigation?
A student drew a maze on a piece of cardboard. He challenged another student to maneuver a paperclip successfully through the maze to the stack of papers by moving a magnet under the cardboard.
According to the information and image shown above, what force was the student demonstrating?
The force of friction was less on the left so the box moved to the right.
What can be said about the effect of the force being applied by the student on the left?
A group of students is investigating the effects of force on tooth enamel when brushing teeth. Tooth enamel is the thin, hard, clear outer covering of teeth that protects teeth from damage. The student's used hard-boiled eggs to represent teeth, the same toothbrush, the same brand of toothpaste, and the same amount of water. What safety equipment should the students wear in this investigation?
