Science Quiz

Ravi blows up a balloon and ties it closed. The balloon stays large for days. Why does the balloon stay large?

• Some of the empty space in the balloon became solid.

• The air became solid after it entered the balloon.

• The balloon cannot change shape after it is stretched.

• Small air particles take up the space inside the balloon.

Oscar and his friends take turns riding in Oscar's go-kart while Oscar's dad pushes. Oscar's dad pushes all the boys with the same amount of force. But the boys go different speeds because they have different masses. The boys' masses are shown in the table. Which boy will have the greatest speed?

• Oscar

• Juan

• Harry

• Tim

The devices pictured below are used to convert _________ energy into _________ energy.

• solar; wind

• wind; solar

• electrical; mechanical

• mechanical; electrical

Cassandra made an electric circuit with a wire, a battery, and a light bulb. The bulb lit up. She replaced the wire with a string, and the bulb did not light. Why did the wire work, but the string did not?

• Wire is an electrical conductor and string is an electrical insulator.

• String and wire are both electrical conductors.

• Wire and string are both electrical insulators.

• String is an electrical conductor and wire is an electrical insulator.

Some resources are renewable. Other resources are nonrenewable. Which statement about plants is true?

• Plants are renewable resources because new plants can grow.

• Plants are renewable resources because there are so many kinds.

• Plants are nonrenewable resources because they can die.

• Plants are nonrenewable resources because they need the sun.

A family is camping outdoors. At night they start a small fire to keep warm and to help them see. What two forms of energy is the fire giving?

• light energy and thermal energy

• thermal energy and sound energy

• sound energy and light energy

• mechanical energy and sound energy

A boy is playing with marbles. He places marble 1 on the ground. He rolls marble 2 toward marble 1. What will happen when marble 2 hits marble 1?

• Both marble 1 and marble 2 will gain energy.

• Both marble 1 and marble 2 will lose energy.

• Marble 2 will gain energy, and marble 1 will lose energy.

• Marble 1 will gain energy, and marble 2 will lose energy.

When static electricity is discharged in the atmosphere, it forms...

• thunder

• lightning

• rain

• hail

Sophia was using a speaker to play music. She accidentally splashed some water on the speaker. Sophia noticed that the drops of water jumped up and down on top of the speaker. Why did the drops of water move like this?

• The speaker took away the force of gravity from the water.

• The energy from the speaker went around the water instead of through it.

• The sound from the speaker transferred energy to the water.

• The water was repelled from the material the speaker was made of.

All fossil fuels are ________________ resources.

• nonrenewable
• renewable