Unit 3 Vocabulary Practice & Review

Vocabulary Matching Force An action that can change the position or motion of an object Friction A force that acts in the opposite direction Gravity A force that pulls object to Earth Magnetism A force that pulls a magnetic object or material across a distance Motion A change in position Position Where something is located Push A force that would cause something to move away Pull A force that would cause something to move toward or with you Structure The body part that is likely an adaptation to help the organism survive Function The purpose of the body part that helps an organism survive 1. Would it be easier to roller skate on concrete or carpet? Carpet Concrete Neither would be easy 2. Lisa is testing how far a toy car will roll on certain surfaces. She uses the same toy car to keep her results accurate. She notices the toy car travels further on the hardwood floor and travels the shortest amount on the carpet. Which of the following explains her results? Because there is more friction on the hardwood floor Because there is more friction on the carpet There is not enough information to determine why. 3. When Lisa tested the toy cars, what was the control variable of her experiment? (remember: the control variable is what stays the same) The surface she tested The color of the toy car The toy car she used The distance Hank used the same ramp height and toy car to test how far the car would travel on different surfaces after exiting the ramp. His data can be seen below. Use Hank's data for the following question. Sand paper 5 in Hardwood floor 12 in Tile 13 in Carpet 3 in Grass 7 in 4.Which of the following can be concluded based on Hank's data? The friction was the highest on the tile There was no friction on the carpet The friction was the lowest on the tile There is not enough data to determine anything