1. How does a simple machine make work easier? a.It increases the amount of work that is done b.No force will be needed to do work c.The amount of force used is increased d.Distance required to do the work is increased Which of the following is an element? a.NaCl b.Fe 3 O 2 c.OH d.Fe

2. The table shows the mass and velocity of four animals. Which animal has the greatest momentum? a.Cheetah b.Grizzly Bear c.Hyena d.Wild turkey What happens during a physical change? a.New substances are formed b.The identity of the substance is changed c.A chemical reaction occurs d.A substance may look different but not lose its identity AnimalMass (Kg)Velocity (m/s) Cheetah4520 Grizzly bear20013 Hyena7018 Wild Turkey117

3. Your father is driving to the beach. He drives at one speed for two hours. He drives at a different speed for another two hours and a third speed for the final hour. How would you find his average speed for all five hours? a.Divide the total driving time by the total distance. b.Multiply the total driving time by the total distance. c.Divide the total distance by the total driving time. d.Subtract the total driving time from the total distance. As a substance changes from a liquid to a gas, the distance between it’s molecules a.Increase b.Decrease c.Stay the same d.Go in a circle

4. Two objects traveling at the same speed have different velocities if they a.Start at different times b.Travel different distances c.Have different masses d.Move in different directions Which substance has a definite shape and definite volume? a.Crystal of table salt b.Solution of salt water c.Water vapor d.Iced tea

5. Answer Key Slide one D/D Slide two B/D Slide three C/A Slide four D/A