Black body emission and Energy from the Sun

Black body emission and Energy from the Sun

11th Grade

8 Qs

quiz-placeholder

Similar activities

gravitation

gravitation

9th Grade - University

10 Qs

Astrophysics 1

Astrophysics 1

11th Grade

10 Qs

Archeoastronomy

Archeoastronomy

9th - 12th Grade

10 Qs

Stars Formation Review

Stars Formation Review

6th - 12th Grade

10 Qs

astronomy

astronomy

9th - 12th Grade

11 Qs

Hubble Telescope Picture

Hubble Telescope Picture

9th - 12th Grade

10 Qs

Life Cycle of a Star

Life Cycle of a Star

11th Grade

13 Qs

Universe Intro Quiz

Universe Intro Quiz

6th - 12th Grade

13 Qs

Black body emission and Energy from the Sun

Black body emission and Energy from the Sun

Assessment

Quiz

Physics

11th Grade

Easy

Created by

Benny Arimon

Used 2+ times

FREE Resource

8 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

1 min • 1 pt

The wavelength of the CMB is 1.1 mm. What is the absolute temperature associated with this wavelength? Remember to include units with your answer.

2.9 K

2.6 K

2.9 × 10–3 m K

2.9 × 10–3 mK

2.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Media Image

Light from a distant star is detected on Earth. The distance between each marked point on the diagram represents one-quarter of the total distance between the star and the Earth.

At which point can the apparent brightness of the star be measured?

A

B

C

D

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The Earth orbits the Sun in an elliptical orbit. The closest distance (perihelion) is 147.1 million km, whilst the furthest distance from Earth to Sun (aphelion) is 152.1 million km.

By what percentage of its smallest value does the apparent brightness of the Sun (otherwise known as the "solar constant") change in the course of a year? Write your answer to 1 significant figure.

1 %

3 %

4 %

7 %

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Star A and star B have the same apparent brightness when viewed from Earth. However the luminosity of star A is twice the luminosity of star B.

What is the ratio of the distance of star A to the distance of star B as measured from the Earth?

Give your answer to two significant figures.

0.50

1.0

1.4

2.0

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A planet is subject to incoming stellar radiation at an average intensity of 2.50 kW m−2 over its whole surface. If it has a constant temperature of 244 C, what is the emissivity of the planet? 

0.617

2.50

5.67

273

6.

MULTIPLE SELECT QUESTION

1 min • 1 pt

What is the total radiative power of a sphere of radius 1.5 cm, and emissivity 0.5, at 60 °C?

2.0 W

0.99 W

0.14 W

0.07 W

7.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Media Image

Light is shone onto a reflective surface of albedo 0.15 and area 1.5 m2 as shown.

What is the total power scattered by half of the surface?

34 W

45 W

192 W

225 W

8.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Media Image

The Earth has an approximate albedo rating of 0.3. Three sources of albedo and amounts of incoming solar radiation reflected are shown in the table.

What percentage does reflection from Earth’s surface make of the total albedo of the Earth?

94 %

67 %

20 %

16 %