Mystery Detectives

Mystery Detectives Physical Science **Click enter or push arrow button to go to the next slide**

Question 1- Which question below will result in an experiment that can be tested reliably? *A. How does changing the height of a ramp affect the distance that a toy car travels?* *B. What is the freezing point of salt water? * *C. What is the mass of a beaker filled with 500 mL of water? * *D. How fast can a hummingbird flap its wings? *

Question 2 – Water vapor changes into liquid water through the process of— *A. evaporation * *B. condensation * *C. precipitation * *D. accumulation *

Question 3 – What part does the sun play in the water cycle? *F. The sun causes ocean water to evaporate.* *G. The sun causes ocean water to disappear.* *H. The sun causes ocean water to condense.* *J. The sun causes ocean water to precipitate.*

Question 4 – How can most matter be changed from one state to another? *D. By adding or removing heat* *B. By mixing it with other types of matter* *A. By moving it to another container* *C. By changing its mass*

Question 5 – What type of energy does the sun provide? *H. Solar* *J. Sound* *F. Electrical* *G. Lunar*

Question 6 – What causes droplets of water to form on the outside of a glass containing water and ice? *C. Water vapor in the air condenses when it cools.* *D. Water runs over the edge of the glass as the ice melts.* *A. The water seeps through the glass.* *B. Water vapor in the glass evaporates as it cools.*

Question 7 – Friction is produced by— *G. lifting up a light object* *F. pouring a thin liquid* *H. weighing a heavy object* *J. two surfaces rubbing together*

Question 8 – Which of the following forces pulls a person jumping rope back to the Earth’s surface? *F. Pressure* *J. Gravity* *G. Inertia* *H. Friction*

Question 9 – The process where a solid changes to a liquid is called— *C. melting * *A. freezing * *B. condensing * *D. evaporating *

Question 10 – A student threw a ball into the air. It followed a curved path and soon fell to the ground because— *B. friction from the air slowed the ball down * *A. gravity changed the ball’s direction as friction from the air slowed it down * *C. the ball was not thrown very hard* *D. the ball was not thrown straight up into the air*

Question 11 – What will happen to the amount of water in the beaker if the temperature of the water reaches 100°C? *A. The amount of water in the beaker will decrease. * *C. The amount of water in the beaker will stay the same. * *B. The amount of water in the beaker will increase. * *D. The amount of water in the beaker will not change. *

Question 12 – Which of the following best explains what will happen if a teaspoon of salt and a teaspoon of sand is stirred into a beaker of hot water? *F. Some of the sand and the sugar will dissolve in the water.* *J. The salt will dissolve and the sand will sink to the bottom. * *G. Both the sand and the sugar will completely dissolve in the water. * *H. Neither the sugar nor the sand will dissolve in the water. *

Question 13 – A student has a mixture of sand and water in a jar. Which of the following tools would be used to separate the soil from the water? *A. A filter or a sieve* *B. A measuring cup* *C. A triple beam balance * *D. A hand lens *

Question 14 – Which of the following is caused by removing heat? *B. A liquid changes to a gas. * *A. A solid changes to a gas. * *C. A liquid changes to a solid. * *D. A solid changes to a liquid. *

Question 15 – A student hears the sound of a bell that means to change classes. Which of the following carries the sound of the bell to the student? *F. Electrical currents * *G. Vibrating air * *H. Radio waves * *J. Magnetic signals *

Question 16 – Which object below will complete the circuit when placed where the X is? *B. A plastic bottle * *A. A metal paper clip * *C. A rubber band * *D. A wooden stick *

Question 17 – All of the following are good insulators EXCEPT— *G. a paper clip * *F. a rubber eraser * *H. a piece of paper * *J. a plastic comb *

Question 18 – Which of the following would BEST reflect light? *J. Craft paper * *G. Aluminum foil * *F. Waxed paper * *H. Plastic wrap *

Question 19 – In which of the following examples is water vapor condensing? *J. Water drops forming on a leaf on a cool night * *F. Water leaking from a faucet * *G. Water in a freezer changing to ice * *H. A puddle of water evaporating on a very hot day *

Question 20 – The force of gravity between two objects is greater when— *F. the distance between the two objects is greater * *G. the distance between the two objects is less * *H. the friction between the two objects is greater * *J. the masses of the two objects are equal *

Question 21– Ice changes to a liquid because it has reached its— *B. melting point * *A. boiling point * *C. freezing point* *D. condensation point*

Question 22 – When 5 g of sugar is mixed with 250 g of warm water, what will probably happen to the sugar? *D. The sugar will dissolve into the water. * *A. The sugar will sink to the bottom of the glass. * *B. The sugar will float on top of the water. * *C. The sugar and the water will separate into layers. *

Question 23 – Steel cans are separated from aluminum cans at a recycling center. Which of the following is the BEST way to separate the steel from the aluminum? *G. Use an electromagnet to remove the steel cans. * *H. Put all the cans in water. * *F. Sort the cans by size. * *J. Melt the cans and pour off the steel. *

Question 24 – When water is frozen, it becomes a solid called ice. When water is boiled it becomes a gas called— *A. water drops * *C. water vapor * *B. a liquid * *D. a gassy state *

Question 25 – The two students pictured below can hear each other because the string— *H. vibrates* *F. stretches* *G. is strong* *J. is long*

Mystery Detectives