Science Heat Review CFA #1

Use the scenario to answer the following question.

A student slid down the rope in gym class he was climbing. When he got back to the floor, his hands were very hot.

Which source of heat MOST LIKELY caused the student’s hands to warm-up?

• Friction

• Burning

• The Sun's Energy

• The Hot Gym

In the classroom one day, your friend felt cold but you felt hot. When you took the temperature of the room near your friend’s desk, it was lower than the temperature near your desk.

Which is the BEST question you can ask to identify the heat source that is causing this difference?

• Who is wearing a T-Shirt

• Does your desk get more sunlight through the window than your friend's desk?

• Is your desk made of wood and your friend's made of metal?

• Whose hair is longer?

You put your water bottle down on the sidewalk while playing at recess. When recess is over your and your friend's waters are all warm.

Which investigation can you perform to show your classmates the BEST place to keep the water as cool as possible?

• Take the temperature of all the water bottles before recess and spread out the water bottles in different sunny areas. Compare the feel of the water bottles after practice.

• Take the temperature of all the water bottles before recess and spread out the water bottles in different sunny and shaded areas. Take the temperature after practice and compare the temperatures.

• Place the water bottles in the direct sunlight and record the beginning temperature and the temperature after recess.

• Place the water bottles in the shade and record the beginning temperature and the temperature after recess.

Students keep burning their hands on the monkey bars at recess. The monkey bars are usually in the sun during recess. Your principal wants to change the material the monkey bars are made of to prevent students from burning their hands.

Which investigation would BEST determine which material should be used for monkey bars?

• Measure the temperature of the material on the ground under the monkey bars and compare it to the temperature of the monkey bars during the hottest part of the day.

• Measure the temperature of the material that the monkey bars are made of while the bars are in the shade and then in the sun. Compare the temperatures to see which is the lowest.

• Measure the temperature of different materials on other playground equipment after the materials have been in the sun for several minutes. Compare to see which has the lowest temperature.

• Measure the temperature of different materials on other playground equipment when they are in the sun and the shade. Compare to see which has the lowest temperature.

A student wants to test out if sunlight does impact the temperature of her three black jackets. The student places the three black jackets in three locations and records their temperatures after 30 minutes.

What can the student conclude based on the results of the investigation? Complete the following sentence.

The student concludes that...

• sunlight affects the temperature of the jacket but not the shade or the room temperature

• direct sunlight increases the jacket's temperature more than sitting in the shade or the classroom

• The temperature of the jacket gets hotter in the shade and the classroom than in direct sunlight

• The temperature of the jack gets just as hot in the shade as it does in direct sunlight

A class was trying to decide what color shirt to order for field day. Field Day is usually on the very hottest month of the year and you will be outside most of the day.

Which investigation can the class do to help them make the BEST color choice for the shirt?

• Place the color choices under a heat lamp and use a thermometer to record the beginning temperature and the temperature after 2 hours.

• Place the color choices near the window on a cloudy day and use a thermometer to record the beginning temperature and the temperature after 2 hours.

• Place the color choices in the freezer and use a thermometer to record the beginning temperature and the temperature after 2 hours.

• Place the color choices on a table and use a thermometer to record the beginning temperature and the temperature after 2 hours.

You leave your chocolate bar in your coat pocket. When you go to eat chocolate bar for a snack, it has melted.

Which question will BEST help determine the source of heat that caused the candy bar to melt?

• How hot is it in the room?

• How thick is the coat?

• How big is the coat?

• How many kids are in the room?

What color usually get the hottest?

• white

• black

• green

• red