If you put a paper clip in water , it will sink. Which is less dense, the paper clip or the water and why?
the water
100
Which of the following is an insulator?
iron, copper, rubber glove, or metal doorknob
rubber glove
100
If a student is hurt in the classroom the first thing you should do is
tell the teacher right away
100
What piece of equipment would accurately measure a liquid during an investigation?
Beaker, graduated cylinder, measuring cups
100
In science we do not use the word colder- What do we say?
take away heat or reduction of heat
200
What happens to molecules from which heat is removed?
They move slower
200
Name three objects needed to make an electromagnet.
battery, wire, and nail
200
What is the first thing you should do before a lab expirament?
Read ALL instructions
200
What tools do you need to determine how long it takes a model car to go 10 cm?
Stopwatch and meter stick
200
How many times should you do an investigation in lab?
multiple times
300
In which liquid would salt dissolve faster?
A. Ice cold water
B. Lukewarm water
C. Hot water
C Hot water
300
When a light switch is turned on it completes or closes a circuit. In a closed circuit-
A. a light turns off
B. there is no sound
C. there is no heat
D. there is an electrical circuit
D. there is an electrical circuit
300
What should you do if something gets in your eye during an expirament?
Tell the teacher
300
A student plans to measure the melting point of candle wax. What 3 tools should the student use?
goggles, thermometer, and a hot plate
300
Which of the following is not a variable in an investigation designed to show "How much light is needed for a spider plant to grow?"
A. Type of Plant
B. Amount of Water
C. Source of Light
D. Amount of light
B. Amount of water
400
Ice melts because the
A. Temperature was decreased
B. The Volume was increased
C. The temperature was increased
D. The volume was increased
C. The temperature was increased
400
What happens to a circuit when the filament breaks in the light bulb?
The light will not turn on.
400
What is a precaution you can take against spilled liquids?
Wear safety gooles, gloves, and aprons
400
What tool would you use in an investigation to test which liquid freezes the fastest?
Stopwatch
400
How can you prove air has mass?
Use a balance scale- Compare the mass of an object without air to the mass of the same object with air.
500
A mixture of pebbles and paper clips can most likely be seperated using which property?
A. Magnetism
B. The ability to disssolve
C. Color
D. Buolancy
Magnetism
500
Which of the following materials could you use to complete a circuit?
copper wire,battery, plastic spoon, a light bulb, rubber ball
copper wire, battery,light bulb
500
What should you do if there is a fire during an investigation?
TELL THE TEACHER
500
What tool would you use to measure the distance from your class to Ms. Le Thai's office?
A. Ruler
B. Beaker
C. Balance scale
D. Meter stick
D. Meter Stick
500
A student tests the ability of three magnets to attract five paper clips. The magnets have equal strengths but different shapes. What is the variable?
A. The number of paper clips
B. The shape of each magnet
C. The strength of each magnet
D. The student's test