Show:
Energy
Electrical Energy
Force and Motion
Matter, Mixtures, and Solutions
Other
100
Which of these best describes energy?
D) The ability to cause motion or create change
100
Ben put a flashlight together as shown in the picture. He used new batteries and a new bulb. He pushed the switch, but the flashlight did not go on. What is most likely the reason?
A) There is no closed circuit
100
Which of these carts is hardest to push?
C) The cart going uphill with the cat and the dog
100
Connor bought a wood chair. What is the chair made of?
A) It consists of invisible atoms.
100
DAILY DOUBLE: What type of matter does NOT have a definite shape, color, or texture? A) Milk B) Air C) Grass D) Metal
Air
200
Which of these best describes light energy?
C) Light waves move only in a straight line
200
Which diagram shows two balloons hanging from strings, one with a positive charge and the other with a negative charge?
C) Opposites attract
200
An object at rest will remain at rest as long as the forces acting upon it...
B) Are equal
200
What is the volume of an object?
D) The amount of space taken up by the object
200
Anne says a baseball and a basketball will fall at the same speed. Her friend disagrees. Which of these is the best way for them to find out?
D) Drop both balls from a high place to compare how fast they fall.
300
Which of these happens when Jacob holds an ice cube in his hand?
A) Heat flows from Jacob's hand to the ice cube.
300
Sara is making an electrical circuit with a light bulb. She needs a rod to complete the circuit. Which of these could be used to complete the circuit and make the light bulb light up?
C) A copper rod
300
When does gravity cause the cars on a roller coaster to speed up?
B) Going down the hills only
300
Kaitlyn is adding a teaspoon of salt to water in a pot. What can she do to make the salt dissolve faster?
B) Heat the pot of water on the stove
300
Ava wants to compare how well four different materials work to insulate a glass jar. She pours boiling water into four jars, each wrapped in a different material. She measures how long it takes for the boiling water in each jar to return to room temperature. The results for the four bottles are almost the same. Which of these is the best thing for Ava to do next?
B) Repeat the investigation several times to check the results
400
DAILY DOUBLE: What is mechanical energy?
An object's potential energy plus kinetic energy
400
What is the main reason electrical wire is often covered with plastic material?
B) Plastic insulates the wire to prevent shocks.
400
Noah and Dylan stand back to back. Each of them pushes his back against the other, but neither boy moves. Why?
B) Both are pushing with equal forces in opposite directions.
400
Which of these would work best to help separate small iron fillings from a pile of sand?
D) A magnet for attracting the iron fillings and leaving the sand behind
400
Look at the picture of a balance with a small metal object and a pile of soil on the pans. What is being measured by the balance?
A) The mass of the pile of soil
500
A scientist says that she has made an important discovery about sound waves. What needs to happen for most other scientists to accept her results?
C) Other scientists need to be able to get the same results.
500
DAILY DOUBLE: What is Newton's third law of motion?
For every action, there is an equal and opposite reaction.
500
Bella saw a box sliding down a ramp. What is the quickest way Bella can slow the box to a stop?
D) Give a push to the box opposite the direction it is moving.
500
Chris is studying the states of matter by heating water in a pan. Which statement from his notebook is an observation?
D) Tiny bubbles form on the bottom of the pan
500
DAILY DOUBLE: What is acceleration?
A change in an object's velocity.